为你解答.
I am very happy that I (am chosen)as the host.
2. Three years (has passed) since he came to China.
3. The girl is often heard (to sing) in the next room.
4. Our teacher told us that the earth (moves) around the sun.
7. I can’t go to see the film tonight, because I (have lost) my ticket. 8. --- What do you think of the film? --- It is very nice. I (have seen) it twice.
10. Ricky felt very happy when he (was chosen) to be the host.
11. -Do you think this kind of apples (sells) well? --- No, I don’t think so.
12. It is said that about 400 cars (will be produced) in the factory next month.
13. How sweet the music (sounds)! I have never heard a better piece.
14. A boy (called) James couldn’t see anything.
15. Oh, you are here. I (thought) you were still in the library.
16. Great changes (have taken)place in my hometown in the past ten years. 17. The Browns (have lived) here for ten years.
18. ---Would you please show me your new radio?
---Sorry. I (was listening) to music.I didn’t catch you.
19. It's very far. You had better (take) a bus.
20. ---Tom , you (are wanted) on the phone. ---OK,I’m coming.