1. I was playing tennis in 3 o'clock in the evening.
2. When I entered he was talking with my friend.
3. They weren't watching TV when mom came home from her work.
4. We were having dinner, when my brother came.
5. It didn't snow in the evening.
6. Children were eating apples when the teacher asked them a question.
7. What were you doing yesterday when he called you?
8. What was she reading from 10 to 12 a.m. on Monday?
9. They had gone to the University, when Kolya met them the day before yesterday.
10. What were you doing at 5 pm?
11. Was he sleeping at that time?
12. It was raining the whole day yesterday.
13. John is still sleeping.
14. Haven't you finished reading this book yet?
15. Who else will go there?