27. A
28. A
29. D
30. B
31. B
32. D
33. Her friend has been seen for five years.
34. If you do more exercise, you won't get bad grades.
35. Mai asked Ba if he liked living in the countryside.
36. It took 6 hours to fly to Ha Noi.
37. Where's Mrs Trang who often prepares dinner for us?
38. I suggest the homeless people are helped at Tet.
39. Tom is really hungry because he hasn't eaten anything for 2 days.
40. He has felt asleep since the end of the film because of its boring content.
Mình có việc bận rùi nên chỉ giúp đc tới đây thui sorry nha
