1. They came back home after they finished their work.
2. She said that she has met Mr. Bean before.
3. Before he went to bed, he read a novel.
4. He told me he not to wear such kind of clothes before.
5. When I came to the stadium, the match started.
6. After Nick has done his homework, he went to bed last night.
7. Mai lived in Hai Phong for five years before she moved to Ha Noi three years ago.
8. Phong told me yesterday that he has learnt French for a year.