1. At this time yesterday we **were playing** tennis in the schoolyard.
2. At 7 p.m. yesterday he **was watching** TV.
3. Yesterday while my father **was watching** TV, my mother **was reading** the newspaper, my sister **was doing** her homework at the time yesterday.
4. What were you doing when I phoned you? - I **was having** a bath.
5. She **was doing** her homework at the time yesterday.
6. Mary **was watering** the flowers at 3 p.m. yesterday.
7. They **were visiting** the zoo at ten o'clock yesterday.
8. Peter and I **were doing** the exercise at this time last night.
9. At 7 p.m. last night my father **was feeding** the pigeons.
10. At this time last year we **were learning** English in London.
11. They **were watching** TV at 4:00 p.m. yesterday.
12. They **were flying** to Ho Chi Minh City at 8:00 p.m. yesterday.
13. At that time, I **was teaching** English for many students.
14. They **were not watching** TV at this time last night.
15. My grandfather **was reading** newspapers at 8 p.m. last night.
16. This time last month, they **were skiing** in France.
17. At 7 a.m. yesterday, he **was not going** jogging with his father.
18. At that time, I **was waiting** for the bus.
19. I **was composing** this song at 9 p.m. last night.
20. I saw Zoe at the party. She **was wearing** an elegant dress at that time.
21. **Was he building** this house at this time last year?
22. This time last summer, I **was visiting** Paris.
23. She **was looking** for her baby at 8 p.m. yesterday.
24. This time last year, we **were celebrating** our third wedding anniversary.
25. While I **was reading** magazines, he phoned.
26. My sister **was doing** the housework while my brother was playing volleyball.
27. When I met Mary and Tom, they **were going** to school.
28. We **were painting** a picture while Alice **was making** a birthday cake.