II>Choose the corect answer in the parentheses1.The weather in the southern states ( gets, get) very hot during the summ...

Hãy tham gia nhóm Học sinh Hoc24OLM

QT

Quỳnh Anh Tong

14 tháng 7 2019 lúc 10:18

Exercise 2: Choose the corect answer in the parentheses 1. The weather in the southern states ( gets, get) very hot during the summer. 2. The result of Dr. Noll’s experiment( was,were) published in a scientific journal. 3. Bob and his friends( is,are) coming to the anniversary party tomorrow night. 4. Every man, woman, and child (is,are) protected under the law. 5. Washing the dishes (is, are) the children’ job 6. A lot of the students (is, are) already here. 7. Som...

Đọc tiếp

Exercise 2: Choose the corect answer in the parentheses

1. The weather in the southern states ( gets, get) very hot during the summer.
2. The result of Dr. Noll’s experiment( was,were) published in a scientific journal.
3. Bob and his friends( is,are) coming to the anniversary party tomorrow night.
4. Every man, woman, and child (is,are) protected under the law.
5. Washing the dishes (is, are) the children’ job
6. A lot of the students (is, are) already here.
7. Some of the furniture in our apartment (is, are) secondhand
8. Some of the desks in the classroom (is, are) broken.
9. At least three-quarters of that book on famous Americans (is, are) about people who lived in the 19th century
10. One of the coutries I would like to visit (is, are) Italy.
11. Some of the cities I would like to visit (is, are) Rome and Vience
12. Each student in the class (has, have) to have a book.
13. Each student in the class (has, have) to have a book.
14. None of the students ( was,were) late today.
15. the number of students in this room right now (is, are) twenty.
16. A number of students in the class ( speaks,speak) English well.
17. There (is, are) some interesting pictures in today paper.
18. There (is, are) an incorrect statement in that newspaper article.
19. The United States (is, are) lacated in North America.
20. Economics (is, are) Don’s favourite subjects.
21. Ten minutes (is, are) more than enough time to complete this exercise.
22. Most people (likes,like) to go to the zoo.
23. The police (is, are) coming. I’ve already called them.
24. Japanese (is, are) very difficult for English speakers to learn.
25. the Japanese (has, have) a long and interesting history.
26. The old in my country (is, are) cared for by their children and grandchildren.
27. This exercise on singular- plural agreement of subjects and verbs (is, are) easy.
28. The extent of Jane’s knowledge on various complex subjects ( astounds. Astound: lam kinh ngac) me.
29. The subjects you will be studying in this cource (is, are) listed in the syllabus.
30. Massachutes andConnecticut (is, are) located inNew England.
31. Only the black Widow spider, or all of the spiders in the United States, ( has,have) caused death among human being.
32. The professor and the student ( agree, agrees) on that point.
33. Almost every professor and student at the Universary ( approves, approve) of the choice or Dr.Brown as the new president
34. Each girl and boy in the sixth- grade class( has,have) to do a science project.
35. Getting to know students from all over the world (is, are) one of the best parts of my job.
36. Annie had a hard time when she was coming home from the store because the bag of groceries ( was,were) too heavy for her to carry.
37. where ( do, does) your parents live?
38. Why ( was,were) Susan and Alex late the meeting?
39. (Is, are) having the respondsibility for taking care of pets good for young children?
40. Some of the fruit in this bowl (is, are) rotten
41. Some of the apples in that bowl (is, are) rotten
42. Half of the students in the class (is, are) from Arabic- speaking countries.
43. Half of this money ( belong, belongs) to you.
44. A lot of students in the class (is, are) from Southeast Asia.
45. A lot of clothing in those stores (is, are) on sale this week.
46. One of my best friends (is, are) coming to visit me next week.
47. Each boy in this class ( has,have) his own notebook.

Giúp mk với, mk đag cần gấp

Thanks

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

QT

Quỳnh Anh Tong

14 tháng 7 2019 lúc 10:31

Exercise 3: Choose the corect answer in the parentheses 1. Every one of the students (is, are) required to take the final test. 2. None of animals at the zoo (is, are) free. All of them (is, are) in enclosures 3. A numbers of students at the university (is, are) approximately 10,000. 4. One of the chief materials in bones and teeths (is, are) calcium. 5. ( Do, does) all of the children have their books? 6. ( Do, does) all of this homework have to finished by tomorrow? 7...

Đọc tiếp

Exercise 3: Choose the corect answer in the parentheses

1. Every one of the students (is, are) required to take the final test.

2. None of animals at the zoo (is, are) free. All of them (is, are) in enclosures
3. A numbers of students at the university (is, are) approximately 10,000.
4. One of the chief materials in bones and teeths (is, are) calcium.
5. ( Do, does) all of the children have their books?
6. ( Do, does) all of this homework have to finished by tomorrow?
7. Why ( was,were) some of the students excutes from the examination?
8. Why ( was,were) one of the students excutes from the examination?
9. What percentage of the earth’s surface (is, are) covered by water?
10. What percentage of the people in the world (is, are) illiterate?
11. ( Do, does) any of you know the answer to that question?
12. There (isn’t, aren’t) any letters in the mail for you today.
13. There (isn’t, aren’t) any mail for you today
14. There (is, are) a lot of problem in the world
15. There (is, are) a fly in this room. Where’s the flyswatter?
16. There (is, are) over 600,000 kinds of insects in the world.
17. How many kinds of birds (is, are) there in the world?
18. Why (isn’t, aren’t) there a hospital close to those villages?
19. There (is, are) a green pen on Tim’s desk.
20. There (is, are) a blue pen and a yellow notebook on Sue’s book.
21. There (is, are) some pens and a notebook on Jack’s desk
22. The United States ( has,have) a population of 250 million
23. The new about Mr. Hogan (is, are) surprising
24. Massachutts (is, are) a state in the Northeastern part of the UnitedState.
25. Physics(seek,seeks) to understand the mysteries of the physical world.
26. Statistics (is, are) a branch of mathematics
27. The Statistics in that report on oil production (is, are) incorrect
28. Fifteen minutes (is, are) maximum length of time allowed for the exam.
29. Twenty dollars (is, are) an unreasonable price for the necklace.
30. Many people in the world (do,does) not have enough to eat.
31. The police (is, are) prepared in case there is a riot.
32. The English (is, are) proud, independent people.
33. English (is, are) not my native language.
34. Many Japanese ( commutes, commute) to their places of work.
35. Portugues (is, are) somewhat similar to Spainish, (isn’t, aren’t) it?
36. The poor (is, are) helped by government program
37. John, along with twenty friends (is, are) planning a party.
38. The picture of the soldiers (bring, brings) back many memories.
39. The quality of these recordings (is, are) not very good.
40. If the duties of these officers (isn’t, aren’t) reduced, there will not be enough time to finish the project.
41. The effects of ciggarette smoking ( has,have) been proven( chung minh) to be extremely harmful.
42. “ The use of credit card in place of cash ( has,have) increased rapidly in recent years.

43. living expenses in this country, as well as in many others, (is, are) at an all time high.

44. Mr. Jones, accompanied(cung voi) by several members of the committee, ( has,have) proposed some changes of the rules.
45. The levels of intoxication (vary, varies) from the subject to subject.
46. neither Bill nor Mary (is, are) going to play tonight.
47. Anything (is, are) better than going to another movie tonight.

mk đang cần gấp cảm ơn nhae

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

LD

Linhh Dang

12 tháng 2 2020 lúc 10:35

Ex1. Choose the correct form of the verb that agrees with the subject. 1. Either my shoes or your coat (is / are) always on the floor. 2. George and Tamara (doesnt / dont) want to see that movie. 3. Maths (is / are) Johns favorite subject, while Civics (is / are) Andreas. 4. The committee (leads / lead) very different lives in private. 5. Eight dollars (is / are) the price of a movie these days. 6. The student council (is / are) meeting today. 7. A number of students (was / were) late for...

Đọc tiếp

Ex1. Choose the correct form of the verb that agrees with the subject.

1. Either my shoes or your coat (is / are) always on the floor. 2. George and Tamara (doesn't / don't) want to see that movie. 3. Maths (is / are) John's favorite subject, while Civics (is / are) Andrea's. 4. The committee (leads / lead) very different lives in private. 5. Eight dollars (is / are) the price of a movie these days. 6. The student council (is / are) meeting today. 7. A number of students (was / were) late for class yesterday. 8. The man with all the birds (live / lives) on my street. 9. 40% of the students (is / are) very unhappy with the university life. 10. The Olympic Games (are / is) held every four years.

Ex2. Choose the correct form of the verb that agrees with the subject.

1. The basketball team (has / have) a new coach. 2. The police (has / have) arrested three suspects. 3. A pound of cookies (cost / costs) about a dollar. 4. Four times eight (are / is) thirty-two. 5. Some of this book (is / are) not very entertaining. 6. The large number of fans (is / are) a big problem for the police. 7. Along the street leading to the stadium (is / are) many tall trees. 8. The value of cars and motorcycles (has / have) increased. 9. Parts of the latest news (is / are) incorrect. 10. 90% of the people in our town always (vote / votes) in local elections.

Ex3. Choose the correct form of the verb that agrees with the subject.

1. Six gallons of milk (are / is) still in the refrigerator. 2. The sound of passing cars (echo / echoes) through the streets. 3. Two pieces of pie (was / were) eaten before dinner. 4. The anthology of short stories (include / includes) at least one story from Poe. 5. A lady with 10 cats (live / lives) in that big house. 6. Of the ten teams, ours (is / are) the best. 7. Neither the basket nor the oranges (was / were) cheap. 8. There (is / are) a dog, a cat, and a bird in the garage. 9. Half of the class (is / are) from another country. 10. 40% of the country (doesn’t / don’t) support the new law.

Ex4. Choose the correct form of the verb that agrees with the subject.

1. The PM, together with his wife, (greets / greet) the press cordially. 2. All of the CDs, even the scratched one, (is / are) in this case. 3. The movie, including all the previews, (take / takes) about 2 hours to watch. 4. The players, as well as the captain, (want / wants) to win. 5. The man, as well as his two children, (stay / stays) in a motel. 6. My boss, who is extremely kind to his employees, (gives / give) us very helpful advice. 7. My sister, not my brothers, (live / lives) in Canada. 8. On Sundays, I and Jack, along with our aunt, often (go / goes) to church. 9. The decision made by the leaders (was / were) definitely the right one. 10. Mumps, an infectious disease, (cause / causes) painful swellings in the neck.

Ex5. Choose the correct form of the verb that agrees with the subject.

1. Our swimming club (is / are) going to compete on Saturday. 2. Rain or sleet (is / are) predicted for tomorrow. 3. Your hands and feet (contain / contains) nearly half the bones in your body. 4. The leader as well as his brothers (belong / belongs) to the same tribe. 5. The students accompanied by their teacher (have / has) gone on a picnic. 6. The poor (are / is) always at a disadvantage. 7. My family (have / has) decided to move to Nottingham. 8. Many a student (have / has) made the same mistake. 9. Neither his father nor his mother (play / plays) mahjong. 10. The visiting times (is / are) between 8 pm and 10:30 pm.

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

HT

Hoàng Thanh Tâm

14 tháng 10 2017 lúc 5:59

Give the correct form of the verbs in brackets. 1, the number of letters each of us (receives / receive ) ........... (is/are)............increasing. 2. The number of days in a week (be) .............. seven. 3, Each of these boys (has/have) ............. a try 4. Either you or he (have) ...............to do the task . 5. None of the the pupils in my class (has/have) ..........failed the test. 6. One-third of these books (belongs/belong) .............. to you. 7. There (has/have) ...........

Đọc tiếp

Give the correct form of the verbs in brackets.

1, the number of letters each of us (receives / receive ) ........... (is/are)............increasing.

2. The number of days in a week (be) .............. seven.

3, Each of these boys (has/have) ............. a try

4. Either you or he (have) ...............to do the task .

5. None of the the pupils in my class (has/have) ..........failed the test.

6. One-third of these books (belongs/belong) .............. to you.

7. There (has/have) ............... been a lot of changes in our country since the liberation.

8. George , together with some of his friends, (have/has) ............. just bought a race-horse.

9. The black and white hat (look/looks) .......... good on you.

10. Either my sister or the neighbours (is/are) .......... looking after the dog.

11. Most of the beer (are/is) ........ spoilt.

12. Both you and the boy overthere (is/are) ............... good at English.

13. Neither of John's parents (be) .............. English

14. Every girl and boy (be) ........... required to have certain immunizations before enrolling in public school.

15. Two years without a job (be) ........ too long to be.

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

HH

Huyền Trang Hoàng

30 tháng 4 2017 lúc 19:36

câu 1 : use a relative pronoun or a relative adverb to combine each pairs of the sentences below ; 1 cúc phương is a famous nation park . i came there along time ago 2 he is a manager in this factory . you have talked to his mother in the company 3 trịnh công sơn composed son...

Đọc tiếp

câu 1 : use a relative pronoun or a relative adverb to combine each pairs of the sentences below ; 1 cúc phương is a famous nation park . i came there along time ago 2 he is a manager in this factory . you have talked to his mother in the company 3 trịnh công sơn composed songs . they are greatly liked by millions of vietnamese people 4 john bridge is ione of my oldest songs . he has just gone to live canada 5 the earth is a planet . it can support life 6 he is famous doctor in my neighbor . you have just me his daughter last night 7 tet is a big occasion . the members of family gather on this occasion 8 the scientists are making progress . they are researching the causes of cancer 9 then he was caught in the mouth of a white shark . it is one of the most dangerous sea creatures 10 the most beautiful park is opposite my house . it has a lot of big trees 11 a waitress served us . she was very impolite and impatient 12 a building was destroyed in the fire . it has now been rebuilt 13 some people were arrested . they have now been released 14 a bus goes to the airport . it runs every half an hous 15 chinese people have a very special kind of soup . this kind of soup is made form shark’s fin 16 many people get sick or die every year . these people eat puffer fish , a very poisonous species

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

H24

hhhh

20 tháng 9 2021 lúc 20:05

IIChoose the corect answer in the parentheses1.A number of students in the class ( speaks,speak) English well.2.There (is, are) some interesting pictures in today paper.3.There (is, are) an incorrect statement in that newspaper article.4.The United States (is, are) located in North America.5.Economics (is, are) Don’s favourite subjects.6.Ten minutes (is, are) more than enough time to complete this exercise.7.Most people (likes,like) to go to the zoo.8.The police (is, are) coming. I’ve already c...

Đọc tiếp

II>Choose the corect answer in the parentheses
1.A number of students in the class ( speaks,speak) English well.

2.There (is, are) some interesting pictures in today paper.

3.There (is, are) an incorrect statement in that newspaper article.

4.The United States (is, are) located in North America.

5.Economics (is, are) Don’s favourite subjects.

6.Ten minutes (is, are) more than enough time to complete this exercise.

7.Most people (likes,like) to go to the zoo.

8.The police (is, are) coming. I’ve already called them.

9.Japanese (is, are) very difficult for English speakers to learn.

10.the Japanese (has, have) a long and interesting history.

11.The old in my country (is, are) cared for by their children and grandchildren.

12.This exercise on singular- plural agreement of subjects and verbs (is, are) easy.

13.The extent of Jane’s knowledge on various complex subjects ( astounds. Astound: lam kinh ngac) me.

14.The subjects you will be studying in this cource (is, are) listed in the syllabus.

15.Massachutes and Connecticut (is, are) located in New England.

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

BN

Bạch Kỳ Nhiên

16 tháng 12 2018 lúc 21:17

I) Read the passage again then decide whether the statements are true(T) of false(F) Chu Van An high school is one of the oldest and most prestigious state schools in Viet Nam. Established in 1908 by the drench , the school was located beside the Wast lake , and was originally named after the location it was in . It is a very pleasant , spacious school with great views of the lake from the classroom windows. In 1943 , the school was moves to Ninh Binh , and was not moved back to Ha Noi until 1...

Đọc tiếp

I) Read the passage again then decide whether the statements are true(T) of false(F)

Chu Van An high school is one of the oldest and most prestigious state schools in Viet Nam. Established in 1908 by the drench , the school was located beside the Wast lake , and was originally named after the location it was in . It is a very pleasant , spacious school with great views of the lake from the classroom windows.

In 1943 , the school was moves to Ninh Binh , and was not moved back to Ha Noi until 1945. In that year, the school was renamed Chu Van An , after a famous Vietnamese Confucianism teacher of the Tran Dynasty. Professor Nguyen Gia Tuong becamr the first Vietnamese principal of the school . Many famous people like ex-prime Ministeer Pham Van Dong , Docter Ton That Tung , anf poet Xuan Dieu Used to be the school;s students
Today the school is still located in the same area , and has maintained its prestige, as well as its reputation as one of the top school in Ha Noi . It is very difficult to be admitted to the school . Every year , there are around three thousand applicants but only about five hundred are admitted. Those applicants have to take an entrance examination conducted by the Department of education and training of Ha Noi

1. Chu Van An high school is one the second oldest schools in Viet Nam __

2. It was moved to Ninh Binh in 1943__

3. It is very difficuld to be admintted to the school __

4. Wvery year, there are aroud three thousand applicants are admintted to the school___

5. The applicants have to take an entrance examination___

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

LA

Lê Minh An

25 tháng 5 2019 lúc 11:34

I/ Đọc đoạn văn và trả lời câu hỏi : Paragraph 1 : Thomas Edison was born on February 11th, 1847 in Milan, Ohio. When he was at school, his teacher considered him to be a slow student. Because of hearing problems, Edison had difficulty following the lessons. But with only three months of formal education he became one of the greatest inventors and industrial leaders in history. Edisons most famous invention was the electric light bulb. He also invented the phonograph, and made improvements to...

Đọc tiếp

I/ Đọc đoạn văn và trả lời câu hỏi :

Paragraph 1 :

Thomas Edison was born on February 11th, 1847 in Milan, Ohio. When he was at school, his teacher considered him to be a slow student. Because of hearing problems, Edison had difficulty following the lessons. But with only three months of formal education he became one of the greatest inventors and industrial leaders in history. Edison's most famous invention was the electric light bulb. He also invented the phonograph, and made improvements to the telegraph, telephone and motion picture technology.
Edison had a special life. He married twice with five children. He loved books, had excellent memory, and always showed curiosity about science. Although he had hearing problems, he refused to have an operation for his deafness. He said that silence helped him concentrate. He always worked very hard and often had only four hours of sleep every day. He used to say, "Genius is 1 percent inspiration and 99 percent perspiration”. When he died on October 18th, 1931, he was still working on new ideas.
1. When was Thomas Edison born?
He was born ______________in Milan, Ohio.
2. Why did he have difficulty in following the lessons?
Because he had___________problems.
3. What was Edison's most famous invention?
4. What did he say about silence?
Paragraph 2 :
We went to Doi Tam, a village famous its drum making techniques, in Ha Nam Province last month. The craft was first introduced to the village sometime in the 8th or 9th century. Today there are more than six hundred drum makers living in Doi Tam village. I was amazed to see big drums in front of every house in the village.

People say that it takes four workers three days to make a drum with a diameter of 1.5 metres. To make a drum, the craftsmen have to carefully an eight stage process. Stretching the drumhead is the most challenging stage because they have to carefully assess the sound it makes. The other steps' do not require such high skills.

Nowadays, Doi Tam drums are not only famous in Viet Nam but are also sold to other countries such as Laos, Cambodia, Japan, and the USA.

1. Where is Doi Tam drum-making village?
->It's in
2. When was the craft first introduced to the village?
-> It was first introduced to the village in
3. How long does it take four workers to make a drum with a diameter 1.5 metres ?
4. Where do the craftsmen put drums in the village ?
Paragraph 3 :
Venice is a beautiful city in northeastern Italy. It is called ‘The Floating City’ as it is built on 117 small islands. This city has no roads. Instead, people use boats to travel along the canals. Flat-bottomed boats were once the main means of transport, but today motor boats are more popular. In Venice, you can visit the famous Piazza San Marco with its world famous basilica, the lovely bridges over the narrow canals, and some of the best museums in Western Europe.
Los Angeles is the most populous city in California, and the second most populous city in the USA. It is a global city, a centre of business, international trade, entertainment, culture, media, and fashion. The Los Angeles area includes Hollywood, and leads the world in the creation of television productions, video games, and recorded music. The weather here is usually dry and warm. Visitors like to go to the film studios and to drive along Hollywood Boulevard. There are also some good beaches near the city, such as Venice Beach.

1. Why is Venice called "The Floating City"?
->Because it is built on_______________
2. How do people travel along the canals in Venice?
->They trayel along the canals by _______________
3. What's the weather like in Los Angeles?
-> ____________________________
4. Which city is famous for its entertainment industry, Venice or Los Angeles?
-> ____________________________
Paragraph 4 :
One of the main sources for the spreading of news and events throughout the world is the newspaper. The purpose of newspapers is to inform the public of political, social, economic and entertainment happenings, among other things. Generally, there are three types of newspapers: daily newspapers, weekly newspapers, and special-interest newspapers. Daily newspapers are published at least one edition every weekday. Most dailies also have a weekend edition. Daily newspapers often have sections for news, sports, arts and entertainment, business, and classified advertising. Weekly newspapers are printed once a week and cover news of interest to readers in a smaller area than that of a daily paper. They focus on .local happenings rather than national or international events. Special-interest newspapers may be published daily, weekly, monthly, or even less frequently. They generally disseminate news of interest to a particular group of readers or feature news about a specific topic.

Thanks to the development of the Internet, we can now get access to electronic newspapers. To some extent, e-newspapers are cheap, up-to-date, and convenient for most readers in the world.

1. How many types of newspapers are there in general?
-> There are.................types of newspapers in general.
2. How often do daily newspapers publish?
> They publish at least...........every weekday.
3. What do weekly newspapers cover?
->____________________________
4. What can we do now with the development of the Internet?
->____________________________
Paragraph 5
It is estimated that about 200 million people who use the Internet computer network around the world. The Internet allows people to work at home instead of traveling to work. The Internet allows businesses to communicate with customers and workers in any part of the world for the cost of a local telephone call. E.mail allows users to send documents, pictures and other data from one part of the world to another in at least 5 minutes. People can use the Internet to do shopping. This save a lot of time. It is possible to use the Internet for education – students may connect with their teachers from home to send or receive e.mail or talk their problems through ‘on-line’ rather than attend a class.
1. What's the number of people using the Internet computer network around the world ?
-> It is about...........................
2. What does the Internet allow businesses to do?
->It allows them to communicate with..................in many parts of the world
3. What does email allow users to do?
->........................................
4. How can the Internet be used for education?
-> .......................................

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

VP

Vinh Phạm

21 tháng 5 2019 lúc 10:06

1. We must use electricity .................................. ( economy ) 2. ....................... energy is the best alternative source of energy ( sun ) 3. Some volunteer .............................. are cleaning up the beach ( conserve ). 4. .................. is better than cure ( prevent ) 5. A good body and love from our parents are the most ......................... thing I have ( price). 6. These toys made in the USA is ............... to children ( harm ) 7. Food is a ........

Đọc tiếp

1. We must use electricity .................................. ( economy ) 2. ....................... energy is the best alternative source of energy ( sun ) 3. Some volunteer .............................. are cleaning up the beach ( conserve ). 4. .................. is better than cure ( prevent ) 5. A good body and love from our parents are the most ......................... thing I have ( price). 6. These toys made in the USA is ............... to children ( harm ) 7. Food is a ............... of our life ( need ). 8. No doubt there will be a great .......................... of food for the world's population ( short ). 9. I am .................... disappointed to know my children have not cleaned up all the trash ( extreme ). 10. Neighbors ............................. to the police about the noise from that house last night ( complaint ) 11. White ao dai symbolizes the .................... of the girl students ( pure ) 12. Smoking does harm ............................... to people's health ( repair ). 13. Speaking in pubic seems to come quite ............................ to her ( nature ). 14. We are looking forward to the latest .......................... in computer technology ( innovate ). 15. ...................................., you will have to make the decision yourself ( ultimate ). 16. The lava in the volcano ........................... as it cools ( solid ). 17. Paper and most plastics are ............................. materials ( recycle ). 18. What should you do at school to ................................. pollution ! ( minimum )

Xem chi tiết

Lớp 9 Tiếng anh Luyện tập tổng hợp

Luyện tập tổng hợp

Khoá học trên OLM (olm.vn)

Khoá học trên OLM (olm.vn)

Luyện tập tổng hợp

Câu hỏi

Khoá học trên OLM (olm.vn)

Khoá học trên OLM (olm.vn)