1. have solved
2. have you been doing
3. has bought
4. have you been swimming
5. have been looking
6. have you been waiting
7. have known
8. have been running
9. have never understood
10. have been playing
11. has never believed
12. have been writing
13. has never seen
14. have you been doing
15. have you ever seen
16. has he been learning
17. have just spoken
18. has gone out
19. have been training
20. have you finished
21. have been revising
22. have been hoovering
23. has cut
24. has been raining
25. have you spent
