1. B have heard
2. B am calling
3. C has put
4. D have painted
5. A told
6. C has known
7. C have looked
8. A arrived
9. B was waiting
10. C had been breaking into
11. D has been becoming
12. D will be having
13. C will have painted/ will be
14. D have ever experienced
15. B used to go
16. B had been walking/realized/ had been
17. A travel/need
18. D am sleeping/ am having
19. B think/likes
20. A would do/ didn't approve
21. C am waiting
22. C has appeared
23. A is in her room studying
24. C have just been thinking
25. B do you think
26. C has been working
27. C am going to make
28. C find

29. C will be
30. C was watching
31. D have existed