7. talking
8. do
9. to write
10. doing
11. helping
12. to come
13. to see
14. to do
15. answer
16. do
17. to cut
18. work
19. to write
20. be punished (câu bị động nên giữ nguyên)
21. not playing
22. drinking
23. avoid ... doing
24. take
25. to know
26. learning
27. reading
28. should keep
29. smoking
30. to keep ... do
31. swimming
32. erasing
33. be
34. tell
35. playing
36. have
37. begin
38. prepare
