1. was having
2. were playing
3. was running
4. was speaking
5. were driving
6. was ironing
7. were sleeping
8. was listening
9. was dusting
10. were playing
1. went
2. was going
3. were going
4. was learning
5. was learning
6. worked
7. was working
8. was reading
9. were doing
10. I didn't play the piano yesterday. i was writing a letter to my friend.
11. I wasn't playing the piano at four o'clock yesterday. I was reading a book.
12. He wasn't sleeping when father came home. He was doing his homework.
13. When I was going to school the day before yesterday, I met Mike and Pete. They were talking and eating an ice- cream.
14. The baby was sleeping the whole evening yesterday. She was feeling bad.
15. What was your father doing from eight till nine yesterday?
16. Why was she crying when I saw her yesterday?