=>
1. It took us two hours to write this writing test.
2. There is a plane leaving for Dalat at seven every morning.
3. Jeans were worn by many people in 1960s.
4. This cigarette lighter was lost by one of our visitors.
5. Chris was said to be in the army.
6. The exact time hasn't been decided yet.
7. After Julia had cleaned the house, she fell asleep on the sofa.
8. I wish I could fly a plane.
9. I wish we had a video game.
10. Nancy hasn't come here since 1986.
11. I used to live in Dalat before, but I don't live there any more.
12. This is the first time I have read such an excellent story.

II/

33. Their house has been painted blue and white.
34. Nobody in our class studies better than Lan.
35. The classroom which we are studying now is very large.
36. The last time we had a party was last Christmas.