1. Why were you angry at me yesterday? -I wasn't
2. Where were you last night? -We went at the theatre
3. When I came to the bus stop, I saw a boy who was playing with a dog
4. It was eleven o'clock when i decided to go to bed
5. What time did they have dinner yesterday? - They were having dinner from seven to eight
6. When she saw him a year ago, she didn't recognize him
7. I was very busy yesterday. I was preparing for my exam all day
8. My brother was washing dishes while I was sweeping the floor
9. Why didn't you see a doctor yesterday?
10. It was raining heavily when we went out