III. Choose the best answer A, B, C or D to complete the following sentences7. Noise pollution can lead to________loss.A...

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4 tháng 4 2022 lúc 15:49

III. Choose the best answer A, B, C or D to complete the following sentences

7. Noise pollution can lead to________loss.

A. looking B. hearing C. listening D. reading

8. If I________a millionaire now, I________travel around the world. But in fact, I am very poor and have no money.

A. were/ would B. am/ will C. were/ will D. am/ would

9. What is the main_______of visual pollution? - Because there are too many advertising billboards.

A. effect B. affect C. result D. cause

10. Ships spill oil in oceans and rivers. This results________the death of many aquatic animals and plants.

A. to B. in C. from D. at

11. There have been some __________ eruptions in this area for the last 10 years.

A. volcanic B. scattering C. homeless D. disastrous

12. We____________ hard at the moment to prepare for our annual cultural festival.

A. prepare B. are preparing C. have prepared D. will prepare

13. Poisonous ___________ from factories can kill a lot of wildlife animals.

A. things B. animals C. chemicals D. nations

14. Last Tuesday, we did a _____________ about English speaking countries.

A. puzzle B. question C. task D. homework

15. I usually__________to school by bike but today I ____________ to school by motorbike.

A. go – go B. go – am going C. goes – go D. goes – am going

16. If it ________ this aftermoon, I’ll stay at home to do my English homework on English speaking countries.

A. rain B. rains C. will rain D. is raining

Lớp 8 Tiếng anh

Zero Two

4 tháng 4 2022 lúc 15:49

chia ra

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H24

Sunn

4 tháng 4 2022 lúc 15:52

7. Noise pollution can lead to________loss.

A. looking B. hearing C. listening D. reading

8. If I________a millionaire now, I________travel around the world. But in fact, I am very poor and have no money.

A. were/ would B. am/ will C. were/ will D. am/ would

9. What is the main_______of visual pollution? - Because there are too many advertising billboards.

A. effect B. affect C. result D. cause

10. Ships spill oil in oceans and rivers. This results________the death of many aquatic animals and plants.

A. to B. in C. from D. at

11. There have been some __________ eruptions in this area for the last 10 years.

A. volcanic B. scattering C. homeless D. disastrous

12. We____________ hard at the moment to prepare for our annual cultural festival.

A. prepare B. are preparing C. have prepared D. will prepare

13. Poisonous ___________ from factories can kill a lot of wildlife animals.

A. things B. animals C. chemicals D. nations

14. Last Tuesday, we did a _____________ about English speaking countries.

A. puzzle B. question C. task D. homework

15. I usually__________to school by bike but today I ____________ to school by motorbike.

A. go – go B. go – am going C. goes – go D. goes – am going

16. If it ________ this aftermoon, I’ll stay at home to do my English homework on English speaking countries.

A. rain B. rains C. will rain D. is raining

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H24

Chauvu

21 tháng 3 2022 lúc 20:19

IV. Choose the best answer A, B, C or D.1. ………….. loss can be caused by noise pollution.A. Sound B. Hearing C. Listening D. Audio2. Ships spill oil in oceans and rivers. This leads …….. the death of many aquatic animals and plants. A. to B. in C. from D. at3. Households pollute water sources by ……….. waste into ponds, lakes, and rivers. A. damaging B. dumping C. losing D. leading4. This month’s electricity bill is too high …….. the air conditioner is turned on all the time. A. since B. due to C....

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IV. Choose the best answer A, B, C or D.

1. ………….. loss can be caused by noise pollution.

A. Sound B. Hearing C. Listening D. Audio

2. Ships spill oil in oceans and rivers. This leads …….. the death of many aquatic animals and plants. A. to B. in C. from D. at

3. Households pollute water sources by ……….. waste into ponds, lakes, and rivers. A. damaging B. dumping C. losing D. leading

4. This month’s electricity bill is too high …….. the air conditioner is turned on all the time. A. since B. due to C. although D. because of

5. The government has come ………….. a solution to the water problems of the city. A. up to B. up with C. to with D. on to

6. All the aquatic plants and animals will die if the factory …….. dumping poison into the lake. A. will keep B. to keep C. kept D. keeps

7. A lot of fish has died recently because of the ………….. water in this lake. A. contaminating B. contaminated C. contaminate D. contaminant

8. If the air was clean, we ………….. have to wear masks when going out. A. wouldn’t B. won’t C. would D. will

9. If I ………….. you, I ………….. water from that dirty tap. A. am - will drink B. am - won’t drink C. were - would drink D. were - wouldn’t drink

10. If he ………….. trash around his garden, the garden would look very nice now. A. will throw B. would throw C. didn’t throw D. doesn’t throw

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Lớp 8 Tiếng anh

thanh tú

22 tháng 2 2022 lúc 20:04

II. Choose the best option marked A, B, C or D to complete each sentence1. Noise pollution can lead to________loss. A. looking B. hearing C. listening D. reading2. If I________a millionaire now, I________travel around the world. But in fact, I am very poor and have no money. A. were/ would B. am/ will C. were/ will D. am/ would3. You should wear_______when you go to concerts or other loud events t...

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II. Choose the best option marked A, B, C or D to complete each sentence

1. Noise pollution can lead to________loss.

A. looking B. hearing C. listening D. reading

2. If I________a millionaire now, I________travel around the world. But in fact, I am very poor and have no money.

A. were/ would B. am/ will C. were/ will D. am/ would

3. You should wear_______when you go to concerts or other loud events to reduce the effect of noise pollution.

A. earphones B. earrings C. earplugs D. ear drops

4. What is the main_______of visual pollution?

- Because there are too many advertising billboards.

A. effect B. affect C. result D. cause

5. Many animals eat the_______and become sick.

A. litter B. energy C. aqua D. temperature

6. Ships spill oil in oceans and rivers. This results________the death of many aquatic animals and plants.

A. to B. in C. from D. at

7. The acid rain has caused____________to the trees in this area.

A. damage B. advantage C. pollutant D. environment

8. Households________waste into the river so it is polluted.

A. damage B. lead C. lose D. dump

9. We have to pay a huge amount of money - three million dong for electricity a month________we turn on the heater all the time.

A. because of B. due to C. although D. since

10. Have you come_______solutions to this problem?

A. up to B. up with C. to with D. on to

11. Typhoons are severe tropical storms. They sometimes happen in my ________.

A. stay B. home C. house D. hometown

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Lớp 8 Tiếng anh

Hằng Võ

27 tháng 2 2023 lúc 18:36

Choose the best answer (A, B, c or D) 1. If I …………… a millionaire now, I …………… travel around the world. But in fact, I ………….. have only a little of money. A. am-will B. am-shall c. was-will D. were-would2. In some Western countries, people often …………… eye contact when they are in a face - to - face talk. A. keep B. hold C. maintain D. both A & C3. The k...

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Choose the best answer (A, B, c or D)

1. If I …………… a millionaire now, I …………… travel around the world. But in fact, I ………….. have only a little of money.

A. am-will B. am-shall c. was-will D. were-would

2. In some Western countries, people often …………… eye contact when they are in a face - to - face talk.

A. keep B. hold C. maintain D. both A & C

3. The kangaroo has been known as a symbol of Australia …………… 1773.

A. since B. from C. for D. in

4. We should wear …………… when you go to concerts or other loud events to reduce the effect of noise pollution.

A. earphones B. earrings C. earplugs D. ear drops

5. What is the main …………… of visual pollution? - Because there are too many advertising billboards.

A. effect B. affect C. result D. cause

6. By 1970, Canada …………… to choose the maple tree with the leaves as its national icon.

A. decided B. has decided C. had decided D. have decided

7. If an earthquake suddenly …………… now, what …………… you do?

A. would occur - would B. occurred - would

C. will occur - will D. occurs - will

8. The victims of the wildfire …………… to the hospital already.

A. has been taken B. have been taken C. has taken D. have taken

9. If the factory …………… dumping poison into the lake, all the fish and other aquatic animals ……………

A. continued - will die B. continues - will die

C. continues - die D. continued – died

10. All the windows of my house…………… in the last night’s storm.

A. open B. opened C.opening D.opens

11. People believe that the …………… water has brought cancer to the local residents.

A. pollutant B. pollution C. polluted D. polluting

12. Factories need to stop dumping industrial …………… into the lakes and rivers immediately.

A. trash B. rubbish C. waste D. litter

13. If local people drink this untreated water, they …………… have cholera.

A. will probably B. probably will C. would probably D. probably would

14. The number of horses in Canada ……………slightly over the past few years.

A. has decreased B. have decreased C. decreased D. had decreased

15. By the time you …………… to England, I …………… there for two days.

A. come-was B. came-was C. came – had been D. had come-was

16. At present, the Holi Festival of Colors …………… in India.

A. is occurring B. is occuring C. are occurring D. are occuring

17. Few people know that before hurricane Katrina, there…………… two more destructive hurricanes occurring in the US.

A. was B. were C. have been D. had been

18. When the city ……………, the storm suddenly ……………and …………… everything away.

A. slept - hit - sweep B. were sleeping - was hitting - swept

C. was sleeping - hit - swept D. slept - hit - was sweeping

19. Three out of five newly-built houses in this area …………… by this accidental fire.

A. was burnt down B. was burnt out C. were burnt down D. were burnt out

20. Fortunately, the injured people …………… by a passerby before his health condition …………… worse.

A. was rescued - became B. had been rescued - became

C. rescued - became D. was rescued - had become

21. The waves of the_________ were so huge that it destroyed everything on the beach.

A. tornado B. hurricane C. tsunami D. earthquake

22. Five skiers are missing after the_________ in the Alps.

A. drought B. landslide C. flood D. avalanche

23. After the_________ all the houses were left under water.

A. flood B. tornado C. typhoon D. mudslide

24. It took firefighters five days to put out the_________.

A. hurricane B. forest fire C. tsunami D. drought

25. A period of 3- 4 months without rain will cause a severe_________.

A. typhoon B. earthquake C. drought D. flood

26. The_________ picked up the car and threw it 100 meters into the air. That’s an incredibly strong wind!

A. tornado B. volcanic eruption C. landslide D. typhoon

27. The_________ shook parts of the region around Tokyo on Saturday. It was 5 on the Richter Scale.

A. hurricane B. flood C. earthquake D. tornado

28. _________ occur when a large amount of water causes the rapid erosion of soil on a steep slope.

A. Tsunamis B. Tornados C. Avalanches D. Mudslides

29. A big storm in the Pacific is known as a_________.

A. avalanche B. typhoon C. tsunami D. tornado

30. Mount Merapi in Indonesia is a famous_________.

A. landslide B. typhoon C. volcano D. tornado

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Lớp 8 Tiếng anh

Hồ Quỳnh Anh

5 tháng 5 2019 lúc 15:29

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II. Choose the word which has the underlined part pronounced differently from the rest.
Question 6. A. recycle B. medical C. chemical D. athletic
Question 7. A. pollute B. botanic C. contaminate D. economy
Question 8. A. into B. history C. tiny D. disease
III. Choose the word which is stressed differently from the rest.
Question 9. A. national B. grammatical C. medical D. chemical
Question 10. A. athletic B. historic C. dramatic D. classic
Question 11. A. scientifically B. economic C. artistic D. scientific
IV. Choose the correct answer to complete each sentence.
Question 12. Water pollution can put negative __________ on our health.
A. contamination B. affects C. effects D. problems
Question 13. A: How can light pollution __________ animals?
B: It can make animals change their behavior patterns.
A. cause B. make C. affect D. lead
Question 14. The dove is a universal __________ of peace.
A. symbolizing B. symbolize C. symbolic D. symbol
Question 15. The city has an atmosphere which is quite __________. You will never feel like that in other
places.
A. important B. normal C. unique D. common
Question 16. __________ about the storm that stroke Hanoi last night?
A. Did you hear B. Do you heard C. Have you hear D. Did you heard
Question 17. Many people __________ because of the earthquake last week.
A. did injure B. injured C. have injured D. were injured
Question 18. When I looked at the river, I knew it __________ for a long time.
A. had contaminated B. had been contaminated
C. was contaminated D. contaminated
Question 19. All flights to Ha Noi had to be cancelled __________ the storm.
A. as a result B. due to C. because D. so
Question 20. When we were young, we __________ in the river near our home.
A. used to swim B. have swum C. had swum D. were swimming
V. Find a mistake in each sentence.
Question 21. My father worked (A) in a noisy factory for (B) a long time, since (C) he suffered from hearing
loss (D).
Question 22. The River Thames flows (A) through southern (B) England and connect (C) London with (D)
the sea.
Question 23. Much (A) of the town was reconstruct (B) after (C) the tornado (D).
Question 24. Look at (A) those (B) grey clouds! It will (C) rain soon (D).
Question 25. Students might (A) only use the (B) laboratory once (C) a (D) week.
VI. Read the passge. And decide if the following statements are true (T) or false (F).

Living in Scotland

Scotland is the UK’s most northern country and has around 790 islands off its coasts – 130 of which
have people living on them. Scotland is well known for its stunning landscapes, beautiful beaches and lochs,
which are fress water lakes. There are over 600 square miles of lochs in Scotland including the most famous
one, Loch Ness.
It has a population of just over five million people which is about 8.5 per cent of the whole UK
population. Over 2 milion of these live in Glasgow and Edinburgh, and almost half of Scotland’s population
live in the Central Belt, where both the largest city (Glasgow), and the capital city Edinburgh) are located.
Scotland also hostsone of the biggest arts festivals in the world. This is commonly known as the
Edinburgh Festival but is actually made up of a number of different festivals which happen at different times
of the year, though many do take place in August and September. Many people have heard of the Fringe
Festival, but there are also the International Festival, the Film Festival, the Children’s Festival and the
Edinburgh Mela which is an intercultural festival.
Question 26. Scottish people inhabit on over 1/6 of its all islands. __________
Question 27. Scotland’s population is over 1/10 of the whole UK population. __________
Question 28. People in Scotland prefer living in other areas to big cities. __________
Question 29. There are 2 common months for Edinburgh Festival. __________
Question 30. There won’t be any special events exclusively for kids in this Festival. __________
VII. Read the passage and answer the questions.
Technology has advanced to the point where instant communication anywhere in the world is an
everyday fact of life. Technology has improved, and has a positive impact on communication as a whole in
many (31) __________ . It has increased the reliability of sending messages to others, made it easier to meet
new people and keep (32) __________ touch with friends.
Modern communication is handled by wireless signals, undersea cables, satellites and other (33)
__________ technology, ensuring the fast delivery of messages and data to any locations. The accessibility of
technology also means that you don’t need to be in any special locations like a post office or mail room to
send a message; all you need is a cell phone.
Online communication has (34) __________ the door to new ways of communicating with strangers and
taking part in communities. Chat rooms, (35) __________ forums and dating sites let people meet each other
and get to know more people without having to be there in person.
Question 31. A. methods B. means C. forms D. ways
Question 32. A. on B. out C. for D. in
Question 33. A. advanced B. high C. simple D. basic
Question 34. A. opened B. closed C. been opened D. been closed
Question 35. A. channel B. discussion C. cyber D. media
VIII. Choose the best sentence that can be made from the cues given.
Question 36. We/ use/ art/ communicate/ 200 years.
A. We will be using art to communicate in 200 years.
B. We will use art for communicating for 200 years.
C. We will have used art to communicating in 200 years.
D. We will be using art for communicating by 200 years.
Question 37. I/ look forward to/ hear/ you/ soon.
A. I am looking forward to hearing from you soon.
B. I am looking forward to hear from you soon.
C. So am I looking forward to hear from you soon.
D. I look forward to hear from you soon.
Question 38. The number/ English speakers/ increase/ recent years.
A. The number of English speakers increase in recent years.
B. The number of English speakers have increased in recent years.
C. The number of English speakers increased in recent years.
D. The number of English speakers has increased in recent years.

Question 39. According/ latest report/ the number/ people/ injured/ typhoon/ nearly/ 150.
A. According to the latest report, the number of people injured in the typhoon was nearly 150.
B. According to the latest report, the number of people were injured in the typhoon were nearly 150.
C. According to lastest, the number of people injured in the typhoon were nearly 150.
D. According to the lastest report, the number of people have injured in the typhoon was nearly 150.
Question 40. Tsunamis/ also/ refer/ the public/ tidal waves.
A. Tsunamis also referred to the public as tidal waves.
B. Tsunamis also refer to the public as tidal waves.
C. Tsunamis is also referred as the public as tidal waves.
D. Tsunamis are also referred to the public as tidal waves.
_________THE END___________

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Lớp 8 Tiếng anh Câu hỏi của OLM

thanh tú

22 tháng 2 2022 lúc 20:13

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III. Find and correct mistakes.
1. The fish are dead because the polluted water.
A B C D
2. Ships spill oil in oceans and rivers led to the die of many aquatic animals.
A B C D
3. Land pollution happens when human activities destroy Earth’s surface.
A B C D
4. She has found that nobody can help her if she did not try her best to do it herself.
A B C D
5. Unless there had been the heavy storm, the climbers will not have died.
A B C D

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Lớp 8 Tiếng anh

ngọc hân

30 tháng 3 2022 lúc 16:11

III. Choose the best answer A, B, C or D to complete the following sentences7. If we want to reduce pollution, we have to make_________changes in the way we live.A. dramatic B. little C. medium D. special8. ___________ is the destruction of the earths surface caused by the misuse of resources and improper dumping of waste.A. Noise pollution B. Air pollution C. Land pollution D. Light pollution9. The Statue of Liberty___________ov...

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III. Choose the best answer A, B, C or D to complete the following sentences

7. If we want to reduce pollution, we have to make_________changes in the way we live.

A. dramatic B. little C. medium D. special

8. ___________ is the destruction of the earth's surface caused by the misuse of resources and improper dumping of waste.

A. Noise pollution B. Air pollution C. Land pollution D. Light pollution

9. The Statue of Liberty___________over 12 million immigrants entering the USA through New York Harbor since 1900.

A. welcomes B. is welcoming C. welcomed D. has welcomed

10. At present, the National Cherry Blossom Festival __________in Washington. D.C. to celebrate spring's arrival.

A. occcurs B. is occuring C. has occurred D. occured

11. In Canada, the handshake should be firm and accompanied by direct eye contact and a_________smile.

A. sincere B. fake C. funny D. serious

12. When there is a _________ a lot of water covers an area where there usually isn't water.

A. drought B. flood C. erosion D. volcano

13. The government__________health and other services to the affected regions.

A. returned B. got C. provided D. took

14. My mother felt very nervous on the plane because she ___________before.

A. doesn’t fly B. won’t fly C. didn’t fly D. hadn’t flown

15. A number of other provinces will declare drought_________ in the coming weeks.

A. accident B. emergency C. event D. situation

16. The capital city of New Zealand is Wellington_________the largest city is Auckland.

A. and B. or C. but D. so

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Lớp 8 Tiếng anh

H24

Khôi

8 tháng 2 2022 lúc 16:46

Ex XII: Choose the best answer1. There are many things a person can do to .....................the visual environment.A. cause B. improve C. reduce D. increase2. If noise pollution .......................,there is a change in animals’ living pattern.A. does B. has C. happens D. exists3. The temperature today is much ..........................than yesterday.A. higher B. slower C. faster D. smaller4. If you throw clothes or school things on the floor, it ...................visual pollution.A. make...

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Ex XII: Choose the best answer
1. There are many things a person can do to .....................the visual environment.
A. cause B. improve C. reduce D. increase
2. If noise pollution .......................,there is a change in animals’ living pattern.
A. does B. has C. happens D. exists
3. The temperature today is much ..........................than yesterday.
A. higher B. slower C. faster D. smaller
4. If you throw clothes or school things on the floor, it ...................visual pollution.
A. makes B. takes C. helps D. causes
5. What should be done to stop people from ...................litter to the environment?
A. doing B. throwing C. picking D. decreasing
6. I was so busy with my assignment that I couldn’t ...........my room for one week.
A. tidy B. sweep C. wash D. make
7. What are the ..................of air pollutants? Industry, agriculture or even transportation
A. benefits B. effects C. problems D. sources
8. The factory has already installed a new filtration system to ..................chemical waste.
A. increase B. provide C. treat D. solve
9. They have ..................trees around the factory to reduce air pollution.
A. planted B. raised C. increased D. had

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Lớp 8 Tiếng anh

H24

Ducky

18 tháng 10 2020 lúc 11:22

Đọc tiếp

17.She gave me a letter and a post card. ….letter is from my sister, and …… postcard is from my
brother.
A. a/ the B. the/ the C. θ / the D. a/ a
18. ….rich should help ….poor and…….disabled.
A. a-a-the B. the-the-the C. a-an-the D. a-an-a
19.I don’t know …………French, but I can speak a little……English.
A. a/ a B. a/ no article C. no article / the D. no article / no article
20. What…pity!
A. a B. the C. an D. Æ
21. There’s someone knocking at the door ……………………..
A. I’ll answer it B. Let me open it C. I’m opening it D. Both A and B are correct
22. Why have you bought so much food ? I ……………………….. for ten people.
A. will cook B. am going to cook C. cooked D. have cooked
23. “ I’m going to die of hunger”. “ really? …………………. A packet of instant noodles.”
A. I’ll buy you B. I am going to buy you C. Let’s buy you D. All are correct
24. Why are you so sad? –“ I think ……………… in the exam next week.”
A. I would fail B. I will fail C. I failed D. I fail
25.The doctor says I …………………….. a baby.
A. will have B. would have C. am going to have D. will be having
26. ………………. successful in the beauty contest.
A.I think she won’t be B. I think she is not going to be
C. I don’t think she will be D. None is correct
27.Why …………………………………… a new pair of jogging shoes ?
A. will you buy B. are you going to buy
C. you will buy D. you are going to buy
28.If you ……Mary today, please ask her to call me.
A. see B. saw C. will see D. would see
29. She will never stop working ……………… she is as rich as Bill Gate now.
A. despite B. because C. although D. so
30. Dean Koontz, ……………. , lives in orange, California.
A. which is an author B. who is an author of horror novels
C. is an author of horror novels D. that is an author of horror novels

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Lớp 8 Tiếng anh Câu hỏi của OLM

Hà Linh

13 tháng 3 2022 lúc 16:34

III. Choose the best answer a, b, c or d to complete the sentence.1. Water pollution can be harmful _______ fish and animals that live along the river.A. to B. at C. for D. in 2. Ways must be found to prevent the poisonous gases ________ polluting the air.A. without B. from C. off D. by 3. She’s come up ________ amazing new ideas to help protect the environment.A. to B. at ...

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III. Choose the best answer a, b, c or d to complete the sentence.

1. Water pollution can be harmful _______ fish and animals that live along the river.

A. to B. at C. for D. in

2. Ways must be found to prevent the poisonous gases ________ polluting the air.

A. without B. from C. off D. by

3. She’s come up ________ amazing new ideas to help protect the environment.

A. to B. at C. with D. of

4. Too much of light pollution results ________ increase in the energy consumption.

A. in B. of C. to D. on

5. Children should be aware ________ the environmental issues we’re facing.

A. with B. at C. in D. of

6. Air pollution has many effects _______ the environment and living organisms.

A. in B. of C. for D. on

7. The volcano has erupted approximately once every ten years_________ 1970.

A. since B. in C. from D. for

8. We can see the stars at night ________ light pollution.

A. since B. as C. because D. due to

9. Water pollution________ the death of all forms of life in the water bodies.

A. occurs B. results C. creates D. leads to

10. Many flights were cancelled ________ the smoke from forest fires.

A. so B. because C. because of D. result in

11. _________ plastic takes so long to break down, it pollutes the land and water.

A. Even though B. While C. Since D. Because of

12. ________ the tsunami warning, there were still lots of people on or near the beach.

A. Due to B. Although C. Because D. Despite

13. Since 2005, India_________ the world’s largest English-speaking population.

A. has B. is having C. had D. has had

14. Over the past five years, Australia’s population_______ by 1.86 million people.

A. increases B. is increasing C. has increased D. is increased

15. The 12th English Teaching Conference________ on 5 – 12 next month.

A. takes place B. took place C. will take place D. has taken place

16. Everyone__________ when the earthquake_________the small town two days ago.

A. was sleeping/ hit B. were sleeping/ hit C. slept/ was hitting D. slept/ hit

17. English__________ as the primary language in many countries around the world.

A. speak B. is spoken C. spoken D. speaks

18. An average of 10 people in Florida_________ by lightning strikes annually.

A. is killed B. are killed C. were killed D. have been killed

19. Scientists predict the South coast_________ by a large hurricane in two days.

A. will be killed B. will kill C. was killed D. is killed

20. By the time the rescuers_________ , they_________ out of food and water.

A. arrived/ ran B. arrived/ have run C. arrived/ had run D. arrived/ had ran

21. Before that day in Hawaii, we_________ a volcanic eruption.

A. never saw B. has never seen C. had never seen D. were never seen

22. So far, some of the storm damaged roads and bridges_________.

A. already repaired B. had already repaired

C. were already repaired D. have already been repaired

23. If we all use public transport more, we_________ reduce air pollution.

A. help B. will help C. would help D. helped

24. Many wildlife habitats will be destroyed if people________ polluting the environment.

A. keep B. keeps C. will keep D. kept

25. If global warming________, temperatures_________ even higher.

A. continues/ would rise B. continued/ will rise C. continue/ will rise D. continues/ will rise

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