Rewrite the sentences as directed 1. Jerry said " I will go to school by bus tomorrow" -> Jerry said.....................

Hãy tham gia nhóm Học sinh Hoc24OLM

Mai Linh

22 tháng 5 2019 lúc 9:33

Change the following sentences into reported speech . 1 . Frank said to me we can book tickets to the game on the phone’’ 2 . I don t have enough money for a drink , she said 3 . I ll come with you as soon as I am ready , he replied . - He said.................. 4 . I told Jenny , The wind is blowing hard outside . 5 . Jerry said , I m quite a good cook . 6 . Can the children get dinner at school I asked him . 7 . Did you take part in the festival last weekend, Marry ?...

Đọc tiếp

Change the following sentences into reported speech .

1 . Frank said to me "we can book tickets to the game on the phone’’

2 . "I don ' t have enough money for a drink ," she said

3 . "I ' ll come with you as soon as I am ready ," he replied .

-> He said..................

4 . I told Jenny , "The wind is blowing hard outside ."

5 . Jerry said , " I ' m quite a good cook ."

6 . "Can the children get dinner at school" I asked him .

7 . "Did you take part in the festival last weekend, Marry ?" said the young man.

8 . "Are you going to see him off at the station ?" he asked her.

9 . "Is there a good art department at your school ?" he asked me .

10 . "Does this train stop at New York ?" asked the old man .

11 . “Will you please get me a glass of hot water ?" She said to me .

12 . “Was she washing her clothes when you came to visit her ?”

13 . “You can use my pen now .” She said .

-> She said.................

14 . “Tomorrow I will go to the bookstore to buy some novels” , Nam said .

15 . “Don ' t use old toothbrushes to clean your teeth” , the doctor said to me .

16 ."Why did your brother go to the department store ?" I asked Binh

17 .’’Which subject do you like most ?”The teacher asked me .

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Băng

29 tháng 6 2018 lúc 13:55

15. Mr.Quang said, I must leve right now 16. Charles said to Jane I have to leave office 3.30pm 17. Mary and John said We dont know those two girls very well 18. Jimmy said to Maryam I have givien you this bike twice 20. Halen asked the child Are you going to visit your uncle tomorrow? 21. She asked her friends, Do you go to school by bike today? 22. The man said to his daughter Did you feel sick yesterday? 23. Paul asked his mother Shall I put this wardrobe here?

Đọc tiếp

15. Mr.Quang said, '' I must leve right now''

16. Charles said to Jane '' I have to leave office 3.30pm''

17. Mary and John said '' We don't know those two girls very well''

18. Jimmy said to Maryam ''I have givien you this bike twice''

20. Halen asked the child '' Are you going to visit your uncle tomorrow?''

21. She asked her friends, ''Do you go to school by bike today?''

22. The man said to his daughter ''Did you feel sick yesterday?''

23. Paul asked his mother ''Shall I put this wardrobe here?''

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Vương Thị Lan Anh

4 tháng 10 2018 lúc 17:29

Exercise : Rewview the following sentences so that the meaning stay the same. 1.Do you go to school by bike? The examiner asked me. ---The examiner asked me.... 2.Which grade are you in? She asked me. ---She asked me ... 3. Can you use computer?The examiner asked me. ---The examiner asked me.... 4.Why do you want this job . She asked me. ---She asked me.... 5.When does your school vacation start? Mss Brown askes me. ---Mss Brown asked me..... 6.Who phoned you yesterday,Lan? said he ---He aske...

Đọc tiếp

Exercise : Rewview the following sentences so that the meaning stay the same.
1.''Do you go to school by bike?'' The examiner asked me.
--->The examiner asked me....
2.''Which grade are you in?'' She asked me.
--->She asked me ...
3. ''Can you use computer?''The examiner asked me.
--->The examiner asked me....
4.''Why do you want this job'' . She asked me.
--->She asked me....
5.''When does your school vacation start?'' Mss Brown askes me.
--->Mss Brown asked me.....
6.''Who phoned you yesterday,Lan?'' said he
--->He asked....
7.''I'm leaving tomorrow''. She said
--->She said....
8.''Who did you give the money to?'' My mother said
---> My mother asked....
9.''We are waiting for the school bus''.said they
--->They said...
10.The teacher said to me''Why don't you answer my question?''
--->The teacher....
11.''I'll come and see you off at the station''said Miss Mary
--->Miss Mary ....
12.''How long have you learnt English?''sais the examminer
---> The examiner asked me....
13.My parents said '' You have to come home before 10 o'clock''
--->My parent said ...
14.''I can;t go to the cinema with you , John '' She say
--->She said...
15.''Why are you interested in taking up a new hobby ?'' sais she
---> She asked me....
16.''I'll complete the work only if you pay me 10s extra''said Tom
---> Tom said to me....
17.''Can i borrow you some money ?'' He said to me
--->He asked me...
18.I asked him''Why don't you come here to mee her?''
--->I asked him.....
19.The teacher said to them''Learn this lesson carefully!''
--->The teacher asked them...
20.He said to me'' I will be very busy today''

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Như Phạm

27 tháng 1 2018 lúc 19:46

III. Turn the following questions into the indirect speech. 1. She said, “Can you speak Spanish, Minh?” 2. Thanh said to her teacher, “Will I finish my exercise at home?” 3. Nien asked Hoa, “Do you have many new friends?” 4. They said to us, “Must you go now?” 5. My friend said, “Are you going to leave tomorrow?” 1. I asked Nam, “Are you free tonight?” 2. She asked the tourists, “Do you know the way to the station?” 3. John said, “Is Phong Nha Cave in southern Vietnam, Nhi?” 4. The visi...

Đọc tiếp

III. Turn the following questions into the indirect speech.

1. She said, “Can you speak Spanish, Minh?”

2. Thanh said to her teacher, “Will I finish my exercise at home?”

3. Nien asked Hoa, “Do you have many new friends?”

4. They said to us, “Must you go now?”

5. My friend said, “Are you going to leave tomorrow?”

1. I asked Nam, “Are you free tonight?”

2. She asked the tourists, “Do you know the way to the station?”

3. John said, “Is Phong Nha Cave in southern Vietnam, Nhi?”

4. The visitors said, “Can we take photo?”

II. Turn the following questions into the indirect speech.

1. The visitors said, “Can we take photo?”

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Mimi

26 tháng 7 2017 lúc 14:20

Turn the sentences into indirect speech : 1. We are going shopping this after noon they said to Mr Quang. 2. I will buy a new bike next week she said. 3. I dont know what Mai is doing now she said. 4. Dont forget to send your parents my regards Lan said. 5. Mary said I can go to the movies with you, John . 6. It isnt foggy today as it was yesterday said the teacher. 7. Linh said Turn off the light before going out 8. I said to him Stay at home 9. My moth...

Đọc tiếp

Turn the sentences into indirect speech :

1. " We are going shopping this after noon " they said to Mr Quang.

2. " I will buy a new bike next week " she said.

3. " I don't know what Mai is doing now " she said.

4. " Don't forget to send your parents my regards " Lan said.

5. Mary said " I can go to the movies with you, John ".

6. " It isn't foggy today as it was yesterday " said the teacher.

7. Linh said " Turn off the light before going out "

8. I said to him "Stay at home"

9. My mother said to the kids " Stop fighting "

10. The teacher said " Don't make noise in the class "

11. " She leans English well " said his mother.

12. The child said to the beggar " Are you very poor? "

13. He said to Lan " I will visit Ha Long Bay tomorrow "

14. She said "Do you often do your homework after school?"

15. He said " I went to the library yesterday "

16. The police asked " Where did you stay last night ?"

17. The girl said " I am going on holiday tomorrow "

18. They said " We are going learning English now "

19. " I'm going away for a few days. I'll phone you when I get back ".

20. He said " My brother is a doctor here "

21. Nga said " I stayed at home yesterday "

22. She asked me " Give me your ticket, please "

23. They asked him " Don't touch the button "

24. She said " I can't find my umbrella "

25. " Please don't smoke in the room " she said

26. " Run faster " he said to his friends

27. " We are growing vegetables " they said

28. " You are my best friends" he said to us.

29. " I'm living in Hue now " Mai says

30. " I want to become a doctor one day " said he.

31. "I'll come and see you as soon as I can "

32. " You should practice speaking English everyday " said my teacher.

33. She said to her son " Go straight upstairs and get into bed "

34. The lifeguard said " Don't swim out too far, boys "

35. He said to Ha " Could you give me a hand, please "

36. The traffic police said " Show me your driving licence, please "

37. Nien asked Hoa " Do you have many new friends? "

38. They said to us " You must go now "

39. I asked Nam " Are you free tonight? "

40. The visitors said " Can we take photos? "

41. She said " Do you know the way to the station? "

42. " Will I finish my exercise at home? "

43. She said " Can you speak Chinese, Minh? "

44. " How old is your grandparent ?" the girl said

45. They said " Who are you going with tomorrow? "

46. " Do you want to visit Great Wall in China, Tan? "

47. " Are you from Canada? " I said to the tourist.

48. " Send me a postcard when you arrive in Paris " I said to Lan.

49. " Why is she crying? " Thu asked How.

50. " When do your children go swimming? " Mrs Ly said.

51. " Will it rain tomorrow? " the old boy said.

52. He says " I live in a quiet village "

53. They said " We must repair our house next week "

54. She said to her friends " You can use my bike today "

55. Hoa's parents said " We'll visit you this summer? "

56. " How often do you wash your clothes? " Hoang asked Nam

57. She said " He doesn't buy this book for me "

58. Nam said " You should go to see the doctor tomorrow, Vinh "

59. " I must do the gardening today " An said to Linh

60. " What time do you go to school? " she said

61. " I wish I were a boy " Mary said

62. " Can I use your dictionary? " Nga asked Thu

63. " Do you like the film we watched" Tom said to David

64. " Will she be here for five days? " John asked Ba.

Giúp mình nhé, mình cần gấp lắm. Mình cảm ơn.

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Mimi

26 tháng 7 2017 lúc 20:28

Turn the sentences into indirect speech : 1. We are going shopping this after noon they said to Mr Quang. 2. I will buy a new bike next week she said. 3. I dont know what Mai is doing now she said. 4. Dont forget to send your parents my regards Lan said. 5. Mary said I can go to the movies with you, John . 6. It isnt foggy today as it was yesterday said the teacher. 7. Linh said Turn off the light before going out 8. I said to him Stay at home 9. My moth...

Đọc tiếp

Turn the sentences into indirect speech :

1. " We are going shopping this after noon " they said to Mr Quang.

2. " I will buy a new bike next week " she said.

3. " I don't know what Mai is doing now " she said.

4. " Don't forget to send your parents my regards " Lan said.

5. Mary said " I can go to the movies with you, John ".

6. " It isn't foggy today as it was yesterday " said the teacher.

7. Linh said " Turn off the light before going out "

8. I said to him "Stay at home"

9. My mother said to the kids " Stop fighting "

10. The teacher said " Don't make noise in the class "

11. " She leans English well " said his mother.

12. The child said to the beggar " Are you very poor? "

13. He said to Lan " I will visit Ha Long Bay tomorrow "

14. She said "Do you often do your homework after school?"

15. He said " I went to the library yesterday "

16. The police asked " Where did you stay last night ?"

17. The girl said " I am going on holiday tomorrow "

18. They said " We are going learning English now "

19. " I'm going away for a few days. I'll phone you when I get back ".

20. He said " My brother is a doctor here "

21. Nga said " I stayed at home yesterday "

22. She asked me " Give me your ticket, please "

23. They asked him " Don't touch the button "

24. She said " I can't find my umbrella "

25. " Please don't smoke in the room " she said

26. " Run faster " he said to his friends

27. " We are growing vegetables " they said

28. " You are my best friends" he said to us.

29. " I'm living in Hue now " Mai says

30. " I want to become a doctor one day " said he.

31. "I'll come and see you as soon as I can "

32. " You should practice speaking English everyday " said my teacher.

33. She said to her son " Go straight upstairs and get into bed "

34. The lifeguard said " Don't swim out too far, boys "

35. He said to Ha " Could you give me a hand, please "

36. The traffic police said " Show me your driving licence, please "

37. Nien asked Hoa " Do you have many new friends? "

38. They said to us " You must go now "

39. I asked Nam " Are you free tonight? "

40. The visitors said " Can we take photos? "

41. She said " Do you know the way to the station? "

42. " Will I finish my exercise at home? "

43. She said " Can you speak Chinese, Minh? "

44. " How old is your grandparent ?" the girl said

45. They said " Who are you going with tomorrow? "

46. " Do you want to visit Great Wall in China, Tan? "

47. " Are you from Canada? " I said to the tourist.

48. " Send me a postcard when you arrive in Paris " I said to Lan.

49. " Why is she crying? " Thu asked How.

50. " When do your children go swimming? " Mrs Ly said.

51. " Will it rain tomorrow? " the old boy said.

52. He says " I live in a quiet village "

53. They said " We must repair our house next week "

54. She said to her friends " You can use my bike today "

55. Hoa's parents said " We'll visit you this summer? "

56. " How often do you wash your clothes? " Hoang asked Nam

57. She said " He doesn't buy this book for me "

58. Nam said " You should go to see the doctor tomorrow, Vinh "

59. " I must do the gardening today " An said to Linh

60. " What time do you go to school? " she said

61. " I wish I were a boy " Mary said

62. " Can I use your dictionary? " Nga asked Thu

63. " Do you like the film we watched" Tom said to David

64. " Will she be here for five days? " John asked Ba.

Giúp mình nhé, mình cần gấp lắm. Mình cảm ơn.

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Mimi

30 tháng 7 2017 lúc 14:08

Change these sentences into indirect speech : 1. Dont throw things away, Mss. Linda said to the students . 2. Shut the door but dont lock it , she said to us. 3. Tom said, Im a student 4. Nga said to He brother, I cant answer this question. 5. Charles said, Im living in London now. 6. He said to us, You are my best friends . 7. John said to me, I dont know what Fred is doing. 8. She said, I will answer the phone. 9. He said to his friends, I must go home now 10. Hoa sa...

Đọc tiếp

Change these sentences into indirect speech :

1. " Don't throw things away", Mss. Linda said to the students .

2. " Shut the door but don't lock it ", she said to us.

3. Tom said, " I'm a student "

4. Nga said to He brother, " I can't answer this question. "

5. Charles said, " I'm living in London now. "

6. He said to us, " You are my best friends ."

7. John said to me, " I don't know what Fred is doing. "

8. She said, " I will answer the phone. "

9. He said to his friends, " I must go home now "

10. Hoa said, " I can't go out after 8 p.m"

11. She said to me, " I will come and see you as soon as I can. "

12. Judy said, " John wants to come here but he isn't very well. "

13. Susan said, " My sister is coming to see me next week."

14. Judy said to me, " I'm going away for a few days. I'll phone you when I get back. "

15. " We are waiting for the school bus ", said the students.

16. She said to me, " Turn off all the lights when you go out."

17. Marry asked me, " Do you want to visit London? "

18. She said, " Can you speak English? "

19. Thanh said to her teacher, " Will I finish my exercise at home? "

20. Nien asked Hoa, " Do you have many new friends? "

21. My friend said, " Are you going to leave tomorrow? "

22. They said to us, " Must you go now? "

23. I asked Nam, " Are you free tonight? "

24. She asked the tourists, " Do you know the way to the station? "

25. John said, " Is Phong Nha Cave in southern Vietnam, Nhi?"

26. The visitors said, " Can we take photos? "

27. Daniel said to Tim, " Is there a cafe nearby ?"

28. He said to me, " Don't forget to post the letter."

29. Nhi said, " I am visiting Hoi An now. "

30. " Can you open your bag, please? " said the customs officers.

31. John said, " I don't know how to this exercise. "

32. She said, " I must stay at home tomorrow. "

33. Hao asked Tim, " Do you like this place?"- " No, I don't "

34. The man said to Nam, " The clock will never work again if you try to repair it. "

35. The teacher asked Nga, " Is Mouth Everest the highest mountain in the world? " - " Yes, it is "

Giúp mình nhé.

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Vinh Phan VN

19 tháng 7 2018 lúc 14:33

I. Turn these sentences into Reported speech. 1. She said,” I can’t find my umbrella”  ___________________________________________________________ 2. They said, “We are learning English now”  ___________________________________________________________ 3. “ My friend is coming next week”, Tom said.  ___________________________________________________________ 4. “ I’ll help my mum with housework this weekend”  ___________________________________________________________ 2. “...

Đọc tiếp

I. Turn these sentences into Reported speech. 1. She said,” I can’t find my umbrella”  ___________________________________________________________ 2. They said, “We are learning English now”  ___________________________________________________________ 3. “ My friend is coming next week”, Tom said.  ___________________________________________________________ 4. “ I’ll help my mum with housework this weekend”  ___________________________________________________________ 2. “ We shall overcome this difficulty”, they said  ___________________________________________________________ 3. “ My father is a doctor here”, my friend said  ___________________________________________________________ 4. “ I am going on holiday tomorrow”, the boy said to his neighbor.  ___________________________________________________________ 5. “ You will have to finish all these exercises before next week”, the teacher said to his students  ___________________________________________________________ 6. “ I came back here early yesterday,” she said.  ___________________________________________________________ 7. “ I’ve broken the vase,” she said  ___________________________________________________________ 8. “ I will never see you again,” the boy said to the girl.  ___________________________________________________________ 9. He said to her, “You are my friend.”  ___________________________________________________________ 10. Johnny said to his mother, “I don’t know how to do this axercise.”  ___________________________________________________________ 11. “ We are waiting for the school bus”, said the chidren.  ___________________________________________________________ 12. Marry said, “My father died a year ago”.  ___________________________________________________________ 13. John said, “I have finished studying my lesson”.  ___________________________________________________________ 14. Mary said, “I can not go to the movies with you, John”.  ___________________________________________________________ 15. “ I shall expect to see you next Wednesday.” Mary said to her friend.  ___________________________________________________________ 16. He said, “I don’t know what happened.” ________________________________________________ 17. She said, “I went to the doctor yesterday.” ________________________________________________ 18. He said, “I have a toothache.” ________________________________________________ 19. She said, “I’ll write him a prescription.” ________________________________________________ 20. They said, “We’re going to the drugstore.” ________________________________________________ 21. He said, “The doctor gave me some pills.” ________________________________________________ 22. She said, “I go to the supermarket every day.” ________________________________________________ 23. He said, “I have received the envelope.” ________________________________________________ 24. They said, “We visited Cannery Row.” ________________________________________________ 25. She said, “I feel very sick.” ________________________________________________ 26. He said, “I bought some popcorn.” ________________________________________________ 27. They said, “We’re flying to California.” ________________________________________________ 28. He said, “I’m cutting off the main valve.” ________________________________________________ 29. Nam said, “my uncle often plants the vegetables in the afternoon.” .............................................................................. ... ... 30. “ My uncle will not plant the vegetables tomorrow afternoon”, she said. .......................................................................................... . 31. “ Mr and Mrs Pike have just read these newspapers”, Nga said. ....................................................................................... 32. She said, “I often listen to music at night.” ............................................................... 33. Lan’s mother said, “ My daughter usually brushes her teeth before meals.” ............................................................................................. 34. They said, “We have to do the assignments now.” ..................................................................... . 35. Lan says, “My sister seldom rides a bike to school.” ............................................................... ... 36. They said, “Our teacher sometimes explains the difficult lesson.” .................................................................................... . 37. Nam said, “ I am doing my homework now.” .................................................................. II . Change the sentences below into direct speech . 1. My mother told me that she was sad then.  ___________________________________________________________ 2. One of my friends said that she liked learning English with her teacher.  ___________________________________________________________ 3. The doctor told me that I could leave the hospital that day.  ___________________________________________________________ 4. The film director said that she was willing to work then.  ___________________________________________________________ 5. The teacher told his students that he would be busy the following month.  ___________________________________________________________ 6. Tom invited me to his birthday party.  ___________________________________________________________ 7. She said the doctor had written her a prescription. ________________________________________________ 8. He said that he had a toothache. ________________________________________________ 9. She said she went to the museum every day. ________________________________________________ 10. They said they were going to the supermarket. ________________________________________________ 11. She said that the doctor had given her some pills. ________________________________________________. III Change the following sentences into reported speech: 1. She said to him: “give me another glass of wine”. ............................................................... ............................................................................................... 2. She said to me: “bring me a book”. ............................................................... ............................................................................................... 3. Mother said to him: “open the window please!”. ............................................................... ............................................................................................ 4. He said to me: “shut the door after you”. ............................................................... ............................................................................................... 5. The captain said to them: “wait here still I come back”. ............................................................... ............................................................................................... 6. She told her: “take it and come with me”. ............................................................... ............................................................................................ 7. He said to me: “don’t come back before one o’clock”. ............................................................... ............................................................................................... 8. My mother told me: “don’t forget to look at the door”. ............................................................... ............................................................................................... 9. He said to his brother: “don’t open the window, open the door”. ............................................................... .................................................................................................. 10. He said to the girl: “don’t sit on my bed, sit on this chair please!”. ............................................................... .................................................................................................. 11. The teacher said: “I am a teacher”. ............................................................... ............................................................................................... 12. She said to me “I have a big house” ............................................................... ............................................................................................... 13. She said to me : “I am going to the party”. ............................................................... ............................................................................................... 14. She said to me: “I gave him your letter.” ............................................................... ............................................................................................... 15. She said: “I have finished my work.” ............................................................... ............................................................................................... 16. Nam said: “I am not a pupil.” ............................................................... ............................................................................................... 17. Nam said: “I am going to Ho Chi Minh city.” ............................................................... ............................................................................................ 18. He said to me: “I have gone to your house.” ............................................................... ............................................................................................... 19. She says: “I knew your difficulties.” ............................................................... ............................................................................................... 20. He said to me: “I gave him your present.” ............................................................... ............................................................................................... 21. He asked me: “Who is Oliver Twist?” ............................................................... ............................................................................................... 22. My mother asked me: “What‘s the matter with you?” ............................................................... ............................................................................................... 23. I asked him: “Which book do you find?” ............................................................... ............................................................................................... 24. He asked me: “When do you finish your work?” ............................................................... ............................................................................................... 25. Mai asked me: “Why didn’t you come?” ............................................................... ............................................................................................... 26. She says: “She had a wonderful evening.” ............................................................... ............................................................................................... 27. The teacher tells us: “You should learn harder and harder.” ............................................................... ............................................................................................... 28. My mother says that: “We are having a party tomorrow.” ............................................................... ............................................................................................ 29. I say to him: “Our teacher will come on time.” ............................................................... ............................................................................................... 30. Mai‘s parents say that: “We are going to invite twenty guests to the party. .................................................................................................................................... Giúp mình với ngày kia mình nộp bài tập rồi

Xem chi tiết

Lớp 8 Tiếng anh Luyện tập tổng hợp

Như Phạm

27 tháng 1 2018 lúc 14:54

I. Turn the following questions into the indirect speech. 1. She said, “Can you speak Spanish, Minh?” 2. Thanh said to her teacher, “Will I finish my exercise at home?” 3. Nien asked Hoa, “Do you have many new friends?” 4. They said to us, “Must you go now?” 5. My friend said, “Are you going to leave tomorrow?” 1. I asked Nam, “Are you free tonight?” 2. She asked the tourists, “Do you know the way to the station?” 3. John said, “Is Phong Nha Cave in southern Vietnam, Nhi?” 4. The visito...

Đọc tiếp

I. Turn the following questions into the indirect speech.

1. She said, “Can you speak Spanish, Minh?”

2. Thanh said to her teacher, “Will I finish my exercise at home?”

3. Nien asked Hoa, “Do you have many new friends?”

4. They said to us, “Must you go now?”

5. My friend said, “Are you going to leave tomorrow?”

1. I asked Nam, “Are you free tonight?”

2. She asked the tourists, “Do you know the way to the station?”

3. John said, “Is Phong Nha Cave in southern Vietnam, Nhi?”

4. The visitors said, “Can we take photo?”

5. Daniel said to Jim, “Is there a cafe nearby?”

Xem chi tiết

Lớp 8 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)