Răspuns:
1. broke (past simple)
2. wasn't watching (past continuous)
3. heared, was doing
4. did, get
5. did, do
6. prepared, was doing
7. watered
8. had, knocked
9. got
10. have, got
11. studied, was playing
12. visited
13. didn't do, was
14. didn't skate
15. phoned, didn't answer