1. is sleeping
2. go
3. are playing
4. am turning
5. cooks
6. will come
7. isn't ...... is
8. are
9. isn't hoặc is not
10. are you singing
11. is
12. wash
13. have never drinked
14. do Quan and his wifework
15. show
16. go
17. needs
18. go
19. are studying
20. stay
21. will invite
22. collecting
23. often don't help
hoặc do not
24. has started ........ has lasted
25. doing
26. are
27. swimming
28. is Hoa having
29. stays .............looks
30. have
31. review
32. go
33. are riding
34. won't come
35. will Lan's sister mail
36. phones
37. doesn't visit
hoặc does not
38. does