2. Jim has been in China for three months. (划线提问)

　 _________ _________ _________ Jim been in China?

1. We come here two hours ago. (改为同义句)

　 We _________ _________ _________ for two hours.

10. Mr. Smith has worked in this factory since he _________ (come) to China.

9. Tom didn’t go to school because _________ (ill).

8. We know you have seen the traffic accident. Please _________ (describe) it for us.

7. Yesterday I fell off my bike. _________ (lucky) I didn’t hurt myself.

6. Now everyone should realize(认识到) the _________ (important) of protecting het environment.

5. Everyone knows him because he _________ (live) here for five years.

4. They _________ (build) the Hope School a few years ago.

3. We have known each other since we _________ (come) here.