Ответ:

1. came / was cooking/ was working

2. were choosing / saw / was speaking

3. was writing

4. was dusting / was vacuuming

5. turned off / locked

6. returned / were sleeping

7. was getting / left

8. were ... doing / phoned / was preparing

9. was ... riding / met / was riding

10. did ... finish / was reading / finished

Объяснение: