1. works
2. became
3. skied
4. Did/have
5. Have/finished
6. has worked.
7. has/had
8. die
9. don't know
10. had been waiting
11. received
12. will play
13. have never been
14. is riding
15. was raining
16. started.
17. is having
18. arrived
19/. came
20. are
21. were swimming
22. usually spend.
23. doesn't like
24. Did/visit
25. will/come
26.Does/usually pick