41.

1. have eaten

2. have made

3. had finished

4. had met

5. have turned

6. have...paid

7. had taken

8. wonder/are waiting

9. is playing

10. aren't writing

11. do...get/go/go

12. do...put/will...go/do...come/will...mind

13. do...owe/owe

14. have read

15. had read

16. will..eat

17. weren't

18. are having

19. doesn't rain

20. was sitting

21. will visit

22. stops

23. comes

24. haven't seen/arrived

25. hasn't...phoned

26. lives

27. have lived

28. had/have had

29. has driven

30. to drive

31. bought

32. paying

33. did...allow/to go

34. know

35. did...remember taking

36. to bring/rains

27.

6. Nobody in our class is better at english than him

8. I spend 15 minutes cleaning the floor

9. I haven't seen minh for 6 months

10. The last time hoa wrote to me was in june last year

11. Mrs brown has seen a more interesting man than her

12. It took them 30 minutes to wash their clothes

13. She hasn't seen her sister for 5 years

14. We haven't been in england since 2000

15. We last saw her was 2 years ago

16. That is the funniest story I have heard

17. It is the first time he has made a bad mistake

18. When did catherine and henry engage?

19. She has bought that house since 1973

20. She is interested in playing football

21. It is the first time I have seen that man

22. It is four years since robert and catherine got married

23. It is 4 years since I last saw him