Find the word which is pronounced differently in the part underlined. 1. A. traditional B.essential C. audition...

Hãy tham gia nhóm Học sinh Hoc24OLM

HH

Hi Hi

7 tháng 3 2020 lúc 9:57

Find the word which has a different sound in the part underlined. 1. A. answer B. further C. butter D. birth 2. A. burn B. collect C. alone D. neighbour 3. A. chimpanzee B. mechanic C. chemistry D. earache 4. A. of B.funny C. wife...

Đọc tiếp

Find the word which has a different sound in the part underlined.

1. A. answer B. further C. butter D. birth

2. A. burn B. collect C. alone D. neighbour

3. A. chimpanzee B. mechanic C. chemistry D. earache

4. A. of B.funny C. wife D. bookshelf

5. A. conquer B.cook C. centimetre D. key

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

H24

OoO_Nhok_Lạnh_Lùng_OoO

24 tháng 10 2017 lúc 20:09

1. Find the word which has a different sound in the part underlined. 1. A. blanket B. calorie C. donate D. allergy 2. A. help B. benefit C. elderly D. garden 3. A. volunteer B. collage C. community D. doctor 4. A. provide B. individual C. situation D. children 5. A. tutor B. student C. university D. discuss 2. Find the odd one out A, B, C or D. 1. A. donate B...

Đọc tiếp

1. Find the word which has a different sound in the part underlined.

1. A. blanket B. calorie C. donate D. allergy

2. A. help B. benefit C. elderly D. garden

3. A. volunteer B. collage C. community D. doctor

4. A. provide B. individual C. situation D. children

5. A. tutor B. student C. university D. discuss

2. Find the odd one out A, B, C or D.

1. A. donate B. provide C. encourage D. benefit

2. A. clean B. street C. house D. wall

3. A. individual B. industrial C. essential D. environmental

4. A. graffiti B. draw C. painting D. collage

5. A. homeless B. elderly C. people D. disabled

3. Find the word which has a different sound in the part underlined.

1. A. cough B. laugh C. enough D. high

2. A. collect B. clean C. city D. cracker

3. A. pottery B. melody C. modal D. profit

4. A. near B. clear C. dear D. learn

5. A. knocked B. needed C. founded D. wanrted

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

TP

Tấn Phát

6 tháng 1 2019 lúc 21:17

Các bạn giải giúp mk nhé! I. Choose the best answer 1. He loves _____________ tree leaves from different countries. A. collecting B. collected C. collect D. collects 2. My dad enjoys ________ his bike to work. A. to ride B. ride C. rides D.riding 3. I love cooking, _________ my sister doesn’t. A. because B. so C.but D. and 4. Laughing is good_________ your health. A. for B. to C. with D. of 5. Choose the word that has the underlined part pronounced /3:/ A. dear B. pear C. earn D....

Đọc tiếp

Các bạn giải giúp mk nhé!

I. Choose the best answer

1. He loves _____________ tree leaves from different countries.

A. collecting B. collected C. collect D. collects

2. My dad enjoys ________ his bike to work.

A. to ride B. ride C. rides D.riding

3. I love cooking, _________ my sister doesn’t.

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

4. Laughing is good_________ your health.

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

5. Choose the word that has the underlined part pronounced /3:/

A. dear B. pear C. earn D. heart

6. Choose one mistake and correct it.

I find carve eggshells boring because it takes a lot of time to complete one shell.

A B C D

7.- __________ do you find making pottery? – I finding making pottery interesting.

A. What B. How C. Why D. When

8. Jenny ___________ two eggshells and he will continue the third one.

A. carves B. has carved C. carved D. will carved

9. My father hates ___________ coffee. He prefers tea.

A. drunk B. drink C. drinks D. drinking

10. I have a temperature _________________

A. and I eat more vegetables B. or I am putting on weight

C. so I feel tired D. but I go to bed early

11. Which word has the underlined part pronounced differently from the others?

A. away B. answer C. sunburn D. picture

12. Which word has main stress differently from the others?

A. volunteer charity C. melody D. calorie

13. Beethoven ___________ a lot of songs.

A. composes B. composed C. has composed D. compose

14. Liz: I am so nervous thatI am putting on weight.

Tony: _______________________ .

A. Wash your hand more B. Eat less junk food

C. Sleep more D. Sunbathe less

15. Jack spends almost his time staring at his smart phone, ___________ is very short-sighted.

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

16. My father loved ____________horse-riding when he was young.

A. doing B. going C. playing D. taking

17. She feels itchy and her nose is running. She says she has _____________

A. headache B. toothache C. allergy D. flu

18. Jenifer says that she ___________ collecting dolls, but she __________ in the future.

A. will like / won’t continue B. likes / won’t continue

C. likes / continues D. will like / continues

19. I __________ Nha Trang when I was a child.

A. visit B. visited C. will visit D. have visited

20. He ___________ to the USA so far.

A. is B. was C. will be D. has been

II. Read the passage. Circle A, B or C to answer each question or complete each sentence.

The Peace Corps is one of the most famous organisations in the world that help people. This organisation was founded in 1961 by the former US President John Kennedy. People working in this organisation are called volunteers. They are both men and women. They live and work in other countries for two years at a time. They share skills with people to help solve challenging problems in developing countries. Peace Corps volunteers work as teachers at schools. They also help communities to protect their environment and prevent the spread of diseases. They also help farmers grow more food efficiently. Peace Corps volunteers build bridges of cross-cultural understanding with people of other countries. They help people from other countries learn more about who they are. Peace Corps volunteers also bring home with them better understanding of other peoples and cultures.

1. What can be the best title for the passage?

A. The Efforts of the Peace Corps

B. John Kennedy's Creation

C. Building the Bridge Between Cultures

2. The Peace Corps ______.

A. work only inside the US

B. is a famous organisation in the world

C. was founded for profit

3. Peace Corps volunteers ______ in developing countries.

A. take away the food of the farmers

B. help solve problems

C. stop the spread of peace

4. One example of the efforts of the Peace Corps volunteers is to ______ in foreign countries.

A. share skills with people

B. teach farmers

C. build bridges

5. The word they in paragraph four refers to ______.

A. people of other countries

B. cross-cultural bridges

C. Peace Corps volunteers

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

HH

Hi Hi

7 tháng 3 2020 lúc 10:02

Find the word which has a different sound in the bold italic part. 1. A. answer B. further C. butter D. birth 2. A. burn B. collect C. alone D. neighbour 3. A. chimpanzee B. mechanic C. chemistry D. earache 4. A. of B.funny C. wife...

Đọc tiếp

Find the word which has a different sound in the bold italic part.

1. A. answer B. further C. butter D. birth

2. A. burn B. collect C. alone D. neighbour

3. A. chimpanzee B. mechanic C. chemistry D. earache

4. A. of B.funny C. wife D. bookshelf

5. A. conquer B.cook C. centimetre D. key

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

HH

Hi Hi

7 tháng 3 2020 lúc 10:05

Choose the word with the different stress pattern. 1. A. enjoy B. collect C. escape D. paper 2. A. answer B. repeat C. repair D. attract 3. A. village B. summer C. contact D. winter 4. A. raincoat B. machine C. airport...

Đọc tiếp

Choose the word with the different stress pattern.

1. A. enjoy B. collect C. escape D. paper

2. A. answer B. repeat C. repair D. attract

3. A. village B. summer C. contact D. winter

4. A. raincoat B. machine C. airport D. bookshop

5. A. homesick B. explain C. allow D. expect

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

MT

Mai Hà Trang

8 tháng 11 2021 lúc 10:54

s 2. Will you _________ making models in the future? A. pick up B. look for C. find D. take up 3. Do you think that hobby is ______ and boring? A. difficult B. interesting C. danger D. easy 4. Eat ______ junk food. It makes you fat. A. less B. more C. little D. too 5. I love cooking, _____ my sister doesn’t. A. because B. so C. but D. and 6. Laughing is good _______ your health. A. for B. to C. with D. of 7. What does your father do _________ his free time? A. on B. in C. at D. while 8. Nowadays...

Đọc tiếp

s 2. Will you _________ making models in the future? A. pick up B. look for C. find D. take up 3. Do you think that hobby is ______ and boring? A. difficult B. interesting C. danger D. easy 4. Eat ______ junk food. It makes you fat. A. less B. more C. little D. too 5. I love cooking, _____ my sister doesn’t. A. because B. so C. but D. and 6. Laughing is good _______ your health. A. for B. to C. with D. of 7. What does your father do _________ his free time? A. on B. in C. at D. while 8. Nowadays people ________ hours sitting in front of computers. A. take B. last C. set D. spend 9. Don’t eat too much junk food, _____you will get fat. A. or B. and C. so D. as 10. Nga finds carving eggshells_________ A. interesting B. interested C. interest D. interests 11. She is creative and draws very well. Her hobby is____________ A. paint B. painting C. paints D. painted 12. My father didn’t go to class to learn______ A. how to carve B. carve C. carving D. carves 13. He took_________ this hobby when he came back to the US. A. with B. to C. on D. up 14. My sister ___________to pop music every day. A. do B. collects C. listens D. goes 15. A hobby helps you to connect with _______people. A. the other B. others C. another D. other 16. I have a temperature, _________I feel tired. A. so B. and C. or D. but 17. I join a photography club, and all the members love __________ a lot of beautiful photos. A. taking B. take C. make D. making 18. I think you should take up swimming ____________ it is suitable for your health condition. A. so B. though C. but D. because 19. I love my sister’s paintings because she is very ___________in using colours. A. careless B. care C. creative D. imagine 20. If your hobby is greeting card making, you can give your ________ to your friends as presents. A. hobby B. money C. greetings D. products 21. My sister’s hobby is sewing, and she can get the sewing patterns from the ______ magazines. A. fashion B. cooking C. sports D. science 22. My brother doesn’t like ice-skating because he thinks it is __________ . A. danger B. in danger C. dangerous D. endangered 23. We often read the instructions carefully in order to make __________ of the things we like best. A. meanings B. models C. copies D. uses 24. You need to be _____ to follow eggshell carving because it may take two weeks to complete one shell. A. careful B. interested C. fit D. patient 25. If you choose sewing as your hobby, you will __________ your own clothes. A. do B. make C. take D. get 26. They think carving wood ____ because we can work with wood and make new beautiful products. A. wonderful B. not wonderful C. is wonderful D. isn’t wonderful 27. I find dancing _______ because we can work with music. A. interesting B. is interesting C. it is interesting D. to be interesting. 28. If you like playing monopoly or chess, your hobby is __________ A. bird- watching B. playing board games.C. collecting D. making pottery. 29. If you spend most of your free time making vases or bowls from clay, your hobby is __________. A. bird- watching B. playing board games. C. collecting D. making pottery. 30. It is interesting _______ tree leaves from different countries. A. collecting B. to collect C. collect D. collects 31. People ___________between 1,600 and 2,500 calories a day to stay healthy. A. need B. needed C. have need D. needs 32. A good diet contains ____________________. A. fat food B. fresh milk C. low- fat food D. high -fat food 33. Be a Buddy was founded_________ to help the street children. A. since 2000 B. in 2000 C. every year D. for 2000 34. She looks very red. She was outdoors all day yesterday. I think she has_______________ A. a temperature B. sunburnt C. a stomachache D. sunburn 35. He keeps sneezing and coughing. I think he has__________ A. flu B. sunburn C. a toothache D. an earache 36. He is holding his neck. I think he has a_______________ A. headache B. allergy C. sore throat D. itchy II/ Complete the sentences with the correct form of the verbs in brackets. 1. Her mum likes (lie) on the blanket and loves (read) her favourite magazines. 2. Anna’s family members (like) the park because they love (be) outdoors. 3. I enjoy (collect) dolls and it becomes my pleasure. 4. We love (watch) ________ new films, and we (go)_______to watch

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

NT

Nguyễn Minh Tuyết

4 tháng 3 2020 lúc 10:09

I/Find the word which has a different sound in the part underlined. 1. A. car B. date C. lazy D. hate 2. A. train B. wait C. said D. paid 3. A. sailing B. railway C. brainstorm D. captain 4. A. safety B. chat C. taste D. waste 5. A. centre B. let C. belt D. security 6. A. safety B. traffic C. station D. plane 7. A. seat B. head C. heavy D. weather 8. A. head B. break C. bread D. heavy 9. A. maid B. wait C. said D. sail 10. A. hey B. grey C. honey D. obey...

Đọc tiếp

I/Find the word which has a different sound in the part underlined.

1. A. car B. date C. lazy D. hate

2. A. train B. wait C. said D. paid

3. A. sailing B. railway C. brainstorm D. captain

4. A. safety B. chat C. taste D. waste

5. A. centre B. let C. belt D. security

6. A. safety B. traffic C. station D. plane

7. A. seat B. head C. heavy D. weather

8. A. head B. break C. bread D. heavy

9. A. maid B. wait C. said D. sail

10. A. hey B. grey C. honey D. obey

11. A. lake B. came C. station D. start

12. A. seatbelt B. bread C. ahead D. healthy

13. A. nature B. ancient C. radio D. village

14. A. enter B. mention C. vehicle D. helicopter

15. A. take B. mistake C. indicate D. says

16 A. traffic B. pavement C. plane D. station

17. A. recycle B. vehicle C. helicopter D. reverse

18. A. sign B. mistake C. triangle D. drive

19. A. nearest B. head C. bread D. health

20. A. railway B. mail C. sail D. captain

II. Choose the best answer (A, B, C or D).
1. Cyclist and motorist have to wear a when they ride a motorbike.

A. cap B. mask C. helmet D. hard that

2. He forgot to give a before he turned left and got a ticket.

A. hand B. signal C. sign D. light

3. All of us have to obey strictly.

A. traffic B. traffic rules C. traffic jam D. regular

4. We should wait for the traffic lights before we cross the street.

A. turn yellow B. turn green C. to turn yellow D. to turn green

5. Drivers have to your seatbelt whenever they drive.

A. tie B. fasten C. put on D. put

6. We should the street at the zebra crossing.

A. walk B. walk through C. walk on D. walk across

7. is it from your house to the nearest bus stop?” – “about 50 metres”.

A. How much B. How long C. How far D. How often

8. Linh used to jigsaw puzzles in his spare time.

A. do B. does C. doing D. did

9. Public in this city is quite good, and it’s not expensive.

A. vehicle B. travel C. transport D. journey

10. I marbles when i was young, but now i didn’t.

A.play B. used to play C. have played D. didn’t use to play

11. There a bus station in the city centre, but it has been moved to the suburbs.

A. were B. used to have C. use to have D. used to be

12. does it take to go from ha noi to ho chi minh city by plane.

A. How much B. How many C. How long D. How far

13. Minh used to his homework late in the evening.

A. do B. does C. doing D. did

14. If people the rules, there are no more accidents.

A. follow B. take care of C. obey D. remember

15. You should right and left when you go across the road.

A. see B. look C. be D. take

16. Hurry up or we can’t___________ the last bus home.
A. keep B. follow C. go D. catch

17. Lan used to go to school .

A. with bike B. by foot C. in car D. by bus

18. Public in my town is good and cheap.

A. travel B. journey C. tour D. transport

19. When there is a traffic jam, it me a very long time to go home.

A. takes B. costs C. spends D. lasts

20. Yesterday rick and peter round west lake. It took them an hour.

A.cycle B. cycles C. cycling D. cycled

III. Complete the sentences with “used to” or “didn’t use to”.
1. I like sports, but now I do a lot of different sports.

2. I be afraid of heights, but then I started climbing hills.

3. I like putting my head in the water because I couldn’t swim.

4. I go skating until I met Anna in Switzerland, and then we have practised a lot so far.

5. I go to school on foot, but now I ride a bicycle to school.

IV. Make sentences using the words and phrases given.
1. Another problem/ the increase/ the number/ cars/ the road. ........................................................................................................................

2. There/ transport rules/ but/ many people/ not seen/ really interested/ follow/ them. ........................................................................................................................

3. The traffic/ worst/ rush hours/ when/ everyone/ try/ get to work/ get home quickly. ........................................................................................................................

4. Some people/ ride/ motorbikes/ the pavements/ rather than/ waiting/ a traffic jam. ........................................................................................................................

5. The traffic/ a nightmare/ visitors/ Viet Nam/ the first time. ........................................................................................................................

6. More people/ own/ private cars/ it/ make/ the problem/ the traffic jams/ worse. ........................................................................................................................

7. Pedestrians/ get injured/ hit easily/ when/ they/ walk/ the pavements/ cross the roads/ such times.

........................................................................................................................

8. Road users/ very impatient/ quite aggressive/ constantly using their horns/ even shouting/ others. ........................................................................................................................

9. Three or four people/ one motorbike/ a common sight/ particularly/ young people. ........................................................................................................................

10. Some people/ install/ air horn/ their motorbikes/ this/ really annoying/ other people/ sometimes/ it cause/ accidents. ........................................................................................................................

V. Complete the second sentence so that it has a similar meaning to the first.
1. Did you often go to the beach when you lived in Nha Trang?

Did you use ................................................................................................... ?

2. Linda doesn’t live with her parents any more. Linda used ...................................................................................................... 3. I don’t have time to collect stamps as when I was in primary school.

I used..............................................................................................................

4. He is not a poor man any more, but he becomes a rich businessman. He used ..........................................................................................................

5. They didn’t often go to the cinema every Sunday last year. They didn’t use ...............................................................................................

6. My hair now is much longer than that in the past. In the past my hair used .................................................................................

7. I usually stayed up late to watch football matches last year, but now I don’t. I used..............................................................................................................

8. There were some trees in the field, but now there aren’t any. There used......................................................................................................

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

MH

Mai Ngân Hà

14 tháng 12 2017 lúc 11:30

I. Choose the correct answers 1. We can make postcards and sell them to _____ money to help the homeless. A. rise B. raise C. get D. own 2. Model making is a wonderful way of _____ time alone or even with other people. A. spend B. spending C. take D.taking 3. I enjoy reading _____ it develops my imagination. A. and B. but C. so D. because 4. We can get many _____ from volunteer work. A. benefit B. benefits C. advantage D. good luck 5. I feel v...

Đọc tiếp

I. Choose the correct answers
1. We can make postcards and sell them to _____ money to help the homeless.
A. rise B. raise C. get D. own
2. Model making is a wonderful way of _____ time alone or even with other people.
A. spend B. spending C. take D.taking
3. I enjoy reading _____ it develops my imagination.
A. and B. but C. so D. because
4. We can get many _____ from volunteer work.
A. benefit B. benefits
C. advantage D. good luck
5. I feel very happy because I can _____ a difference in our community.
A. do B. make C. bring D. take
6. We _____ many toys for street children so far.
A. do B. have done
C. make D. have made
7. In the United States, almost everyone, at one time or another, _____ a volunteer.
A. be B. are C. have been D. has been
8. Wear a hat _____ you'll get sunburnt.
A. and B. or C. but D. so
9. Working hard and doing a lot of exercise helps you burn the calories _____ easily.
A. more B. less C. most D. the most
10. About one-fifth of the American population _____ volunteer work each year.
A. do B. does C. make D. makes
11. To help people with transportation, we can _____ rides to the elderly.
A. ask B. give C. donate D. help
12. Doing volunteer work can ______ you feel more confident.
A. do B. make C. bring D. force
13. Stay outdoors _____ and do _____ physical exercises.
A. more - less B. less - less
C. more - more D. less - more
14. There are many reasons _____ it is important to have a hobby.
A. for B. why C. so D. because
15. I don't think it is difficult to _____ my hobby because I love it very much.
A. take B. go C. have D. follow
16. Don't read or study when there is not enough light because it is _____ to your eyes.
A. harm B. harmful
C. harmless D. unharmed
17.He had a cold _____ he didn't wear warm clothes in the cold weather.
A. and B. or C. because D. although
18. We should help people _____, especially the homeless, the elderly and street children.
A. needed B. need
C. at need D. in need
19. I think you should _____ jogging because it is very useful for your health.
A. take B. to take
C. take up D. take in
20. My aunt often _____ money to charitable organizations to help street children and the homeless.
A. makes B. does
C. donates D. send

II. Complete each blank in the sentences with only ONE suitable word
1. I've eaten too many sweets. T have _____.
2. Do you have a painkiller? I have a _____.
3. I have _____. I think that food was bad.
4. I have a _____ in the leg.
5. Ouch! My arm _____.
6. I got some water in my ear and now I have _____.
7. I can't eat any biscuits. I have a sore _____.
8. That's a bad _____. Try some hot lemon tea.
9. When you have flu, you usually have a high _____.
10. He ate some seafood yesterday. Now he doesn't feel well. He thinks he has a/an _____.

III. Fill in the blanks with "yet" or "already".
1. Have you done volunteer work ____?
2. Most of the students have gone home _____.
3. Have you seen the newest movie at Thang Long Cinema _____?
4. The students have learned the new words in Unit 3 _____.
5. I have _____ done all of my homework.
6. Have you looked up the meaning of this new word _____?
7. The Browns have _____ lived here for two years.
8. We haven't written the letter to thank the volunteers _____.
9. Is it right that you have _____ spoken to the bank manager?
10. My pen pal hasn't come to Viet Nam _____.
IV. Put the verbs in brackets in the correct verb forms
(Linda and John are on a school camping holiday)
Linda: Hey, John (you/put) ______ up Your tent yet?
John: Year, I (just/done) _____ it. It's that green tent.
Linda: I (not/start) _____ yet. I (brrow) _____ this tent from Davismd yesterday, but one of the poles is missing.
John: Are you sure? Why don't why you have a look in the bag?
Linda: I (already/look) _____. It (not/be) _____ there.
John: Calm down. Linda. I (find) _____ it. It's under your bag.
Linda: That's strange. How (it/get) _____ there?
John: I have no idea. Come one. Let's put the tent up.
Ten minutes later
John: There you are. It's ready. It's not bad, but I think my tent (be) _____ better.
Linda: Thanks, John. I owe you one. Oh, no. How terrible!
John: What's up now?
Linda: I (just/see) _____ a spider.
V. Read te converation and then choose the correct answer for each gap.
A: You (1) _____. Are you OK?
B: No, I'm not. I (2) _____.
A: What's (3) _____?
B: I ate some chocolate and now I (4) _____ stomachache.
A: Oh, dear! (5) _____. You (6) _____ (7) _____.
B: Yes, (8) _____.
A: OK. Bye for now. (9) _____.
B: I will. (10) _____ a great holiday!
1. A. don't feel well
B. don't feel bad
C. are well
2. A. feel sick
B. don't feel bad
C. take medicine
3. A. the illness
B. the matter
C. matter
4. A. had
B. have had a
C. have
5. A. Poor you!
B. You're sad
C. Very sick
6. A. must be home
B. will be home
C. should be home
7. A. Take a rest
B. Take many dedicine
C. Eat some here
8. A. you're a friend
B. you're right
C. you're a good idea
9. A. Look after yourself
B. Look at yourself
C. Look yourself
10. A. Have you
B. You're having
C. Have

Giúp mình với nhé! Tối nay mình phải nộp rồi.

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

TM

Trần Huỳnh Ngọc Minh

18 tháng 11 2021 lúc 15:32

II Choose the word with the different stress pattern 1. A. above B. apple C. alone D. again 2. A. dictation B. decision C. librarian D. carefully 3. A. encounter B. determine C. entertain D. endanger 4. A. mountain B. maintain C. fountain D. certain 5. A. answer B. allow C. except D. import

Đọc tiếp

II Choose the word with the different stress pattern

1. A. above B. apple C. alone D. again

2. A. dictation B. decision C. librarian D. carefully

3. A. encounter B. determine C. entertain D. endanger

4. A. mountain B. maintain C. fountain D. certain

5. A. answer B. allow C. except D. import

Xem chi tiết

Lớp 7 Tiếng anh thí điểm Review 1 (Units 1- 2- 3)

Review 1 (Units 1- 2- 3)

Khoá học trên OLM (olm.vn)

Khoá học trên OLM (olm.vn)

Review 1 (Units 1- 2- 3)

Câu hỏi

Khoá học trên OLM (olm.vn)

Khoá học trên OLM (olm.vn)