A
1. took
2. walked, played
3. said, didn't hear
4.rang, opened
5. wrote, posted
6. Did you understand, tried/ spoke
7. Did you buy
8.Did you enjoy, didn't rain, listened
B
1.When did you finish your exams?
2. I waited for an hour but he didn't phone.
3. Did you watch the news on TV last night?
4. Mark stopped smoking last month, and he started playing tennis again last week.
5. He asked me a question, but I didn't know the answer.
6. I lived there for a few years, but I didn't like the place.
C,
1. took
2. did you go
3.came
4.did you visit
5.went
6.had
7.loved
8.did you like
9.enjoyed
10. took
11.did you arrive