1. I played computer games yesterday
2. I was playing computer games yesterday
3. He was playing c.p(мне некогда писать полностью)
4. We were playing c.p
5.What Nick was doing when I came to his place
6. What did you do when I rang you up?
7. I wasn't sleep at nine o'clock
8. What he was doing
9. What he was doing whole evening
10. She was sleeping when you came home?
11. My brother didn't play tennis
12. My sister didn't play the piano
13. Mother was cooking
14. She was cooking
15. We washed
16. We was washing
17. You did your homework
18. You did
19. Why she slept
20. He was sitting