1. wrote, posted
2. didn't go, was
3. did buy, bought
4. did, didn't was
5. jumped, saw
6. didn't enjoy
7. didn't study, studied
8. waited, didn't phone
9. did, do
10. lived, didn't like
11. came, didn't stay
12. did say, didn't hear you
13. stopped, started
но я не во всём уверенна