1. turns
2. turned
3. will turn
4. go
5. was, won't go
6. won't go, costs
7. Did they enjoy
8. will take
4. go
10. does
11. didn't know
12. did
13. will do
14. does
15. did you go
16. will you go
17. do you go
18. how did she help
19. did she help
20. she didn't help