1. - Did you go anywhere last night?
- No, I stayed at home.
2. When did Nick go to London?
3. Tchaikovsky wrote many operas.
4. What were you doing when I called?
5. My dad was teaching me to drive a car when it started raining.
6. We couldn't afford to maintain our car, so we sold it.
7. John was playing the piano while I was reading.
8. I'm sitting in the classroom now. I was reading a detective story at this time yesterday.
9. I wasn't listening to the teacher, so I missed what he had said.
10. They didn't invite Sue to the party, that's why she didn't come.
11. - Did you have any time to write a letter yesterday?
- No, I didn't.
12. When I opened the parcel, I found a surprise.
13. I didn't hear the thunder because I was sleeping.
14. I didn't want to go anywhere because it was raining.
15. When I woke up the sun was shining bright and the birds were singing.