1.Mr.Green has taught English in this school since he graduted from the university in 1986
2.He was sitting in a café when I saw him.
3.They went home after they have finished their work
4. When the phone rang, I was having dinner.
5. Daisy agreed with other members in the last meeting.
6. What were you doing at 6 p.m. yesterday?
7. The little girl asked what had happened with her ice-cream.
8. He had taught in this school before he left for England.
9. That was the first time I have met her, but I haven't seen her again since then
10. Mary had said goodbye to everyone before she went away.