=>
1. have seen
2. saw
3. has never been
4. have read
5. did/do
6. Did you wtach
7. was
8. has written
9. taught/graduated
10. have you learned
11. studied
12. have read
13. have understood
14. travelled
15. had
16. stopped/took
17. was/heard/cried
18. has rained
19. phoned
20. was
21. saw
22. loved
23. visited
24. has already finished
25. has just gone
26. got up
27. moved
28. did you go
29. Did he watch
30. Has she received
