Ex1
1. took
2. didn't buy
3. Did you like. ..
4. didn't dance
5. clapped
6. did the boys
7. tried
8. didn't stop
9. drove
10. Did the film begin. ..
ex2.
1. Did you see. ..
2. lost
3. met
4. didn't come
5. went
6. looked
7. did you do. ..
8. ran
ex3.
1We came to this city 5 years ago.
2. Kevin went swimming 2 days ago.
3. I met you 6 months ago.
4. She arrived in Paris 12 days ago.
ex4
1. used to look like
2. didn't use to have
3. used to swim
4. did you use to go to. ..
5. used not to practice
6. used Peter to support. ..
7. used to enjoy
8. Did you used to watch. ..