4.　　 Why does Tony know so much about space _________(旅行)?

3.　　 Now let’s ________(分享) the bread with them.

2.　　 Have you been to the school library r________?

1.　　 My brother has a_______ finished his homework.

3. Have,seen, saw, has gone, will be

4. is doing　 5. Have, had　 6. will go , doesn’t rain　 7. to close　

8. making　 9. to climb　 10. has gone

5. no one from, sent

4. to understand how, universe　　　

3. have discovered, galaxies, universe　

2. found life, planets yet　

A: Have you _____ Jim these two days?

B: No, he’s _____ to Japan to see his daughter.

A: Has he ever been there ______?

B: Of course. He lived there before he ______ here.

A: Have you still not _____ a letter from him?

B: Yes, I’ve just ______ a letter _____ him.

A: What ______ he say?

B: He said that he ______ a good time ______ would stay there for three weeks. Then he would come back.

单元练习答案