23. D (doesn't he-> isn't he)

24. D (at -> in)

25. C (didn't->wouldn't)

IV.

26.B

27.C

28.B

29.C

30. A

V.

31. It is said that this shop was bought last year.

32. He asked me how much I thought it would cost.

33. Mr.Brown whose team has lost the game looks very sad.

34. You know the man who sat next to me at Nam's birthday pary last night, don't you ?

35. Minh spent 2 hours doing his homework everyday.

36. Because it rained heavily, we were late for school.

37. We used to be made to clean the house by my mother.

38. She said she was working in a restaurant, and didn't care much for it.

39. I haven't spoken to her for two years.

40. It is interesting to go swimming in the river in the summer.

Bạn tham khảo nha, chúc bạn học tốt ^^