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.