1. Tom flew to Chicago last week.
2. They were doing their homework when she arrived.
3. Jack was studying while Dave was cooking dinner.
4. Peter visited his friends in Florida two months ago.
5. Alice was reading a book at six yesterday evening.
6. They played golf yesterday afternoon.
7. She visited Iran last month.
8. She didn't understand the question.
9. We talked for hours about the plans for the future.
10. They didn't expect to see you at Christmas.
11. Peter and Mary weren't working when he came into the room.
12. He entered the door. The candles were burning in the corners and the smell of cigarettes was filling the room.
13. They didn't go to Tom's party last weekend.
14. She was working on her homework while I was preparing dinner.
15. We were watching TV when Dad arrived.
