1. Why were you angry with me yesterday? - I wasn't.
2. Where were you last night? - We were 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 supper yesterday? - They were having supper from seven till eight.
6. When she saw him a year ago she didn't recognize him.
7. Did you prepare for your lessons last night?
8. He liked the last show he saw.
9. I was very busy yesterday. I was preparing for my exam the whole day.