Question

用括号中所给动词的适当形式填空，使句子表达更准确。

1．They want people______________（not kill）pandas．

2．____________she________________（visit）China before?

3．I tried________________（understand）the poems．

4．－When_________ the plane________________（take off）from Beijing

  Capital Airport?

  －Next Sunday．

5．They made the reserves_____________（help）pandas．

6．Astronauts____________（be）to the moon and returned safely．

7．－How long_____________ you__________（study）English?

  －For two years．

8．It’s a good idea___________（bring）an umbrella．

9．What__________ you _________at ten o’clock last night?

10．you mustn’t_________________（eat）in the library．

Answer 1

1．not to kill   2．Has，visited   3．to understand   4．will，take off    5．to help

6．have been  7．have，studied   8．to bring   9．were，doing   10．eat