1. washed
2. was washing
3. finished
4. were having
5. were working
6. was cooking
7. Did they go to the wood last Saturday?
8. were sailing, saw
9. translated
10. opened
11. Did you go to the cinema yesterday?
12. didn't see
13. opened, were sitting
14. When did you begin doing your homework yesterday?
15. were discussing
16. was reading, found
17. Did you watch TV yesterday? - Yes, we were watching TV the whole evening yesterday.
18. When did you go to bed yesterday? - I went to bed at ten o'clock.