1. Yesterday at 9 p.m I was watching TV.
2. She said that she hadn't done her homework yet.
3. When my friend came, I was still having a breakfast.
4. When I first met her, she was working at school.
5. All the students managed to do the task after the teacher explained how to do it.
6. When we went out, the sun was shining bright.
7. My friend told me that his brother had already arrived.
8. I was reading a book when I heard the phone ringing.
9. After the doctor examined the patient, he talked to the patient's relatives.
10. When we arrived at the bus stop, the bus has already gone.
11. He was watching TV when his friend came.
12. The postman usually comes at 9 a.m. It's already 9:30 a.m but he hasn't come yet.
13. I watch TV every evening.
14. The clerks finish their work at 6 p.m.
15. Didn't she know about it?
16. Haven't you seen this film?
17. She hasn't take her little son to the theatre yet.
18. He usually listens to the teacher carefully, but now he isn't listening. He's got a headache.
19. I haven't played football since last year.
20. Little girl и чего там дальше.
А временную форму сможете определить?