15. is doing

16. has won

17. will go

18. to see

19. do you understand

20.reading

21. haven't eaten

22. has written/met

23.is talking/ haven't contacted

24.playing/doing

25. showing/ to send

26.have known/ was

27. have you lived

28. to turn/ work

29.will arrived/ will meet

30. leaves

31. have just sent

32.has worked

33. have been/ graduated

34.plays

35.is attending

36.has studied

37.did she go/ didn't go

38.are going to play( có thể là will nếu chưa có kế hoạch)

39. finish

40. moves

^_^