1 . He said that he ________(buy) some story books tomorrow morning. (所给词的适当形式填空）

2 . It is about time that we __________ (ban) over-fishing to preserve the ecological balance.

3 . I have been eager to do something ________ (benefit) to the world. (所给词的适当形式填空)

4 . Students before exams, ________(benefit) from years of drills, looked calmer than some of their teachers. (所给词的适当形式填空）

5 . Having ________ (balance) meals is very important, especially for teens who are growing up. (所给词的适当形式填空）

6 . There was a ________ (短暂的) pause in the conversation. (根据汉语意思单词拼写)

7 . The workers cut off some ________ (branch) of the big tree to keep the passers-by safe. （所给词的适当形式填空）

8 . One or two glasses of wine a day can be ________ (benefit) (所给词的适当形式填空）

9 . Jim fell asleep in the math class today. That is ___________ he stayed up until midnight doing his homework.

10 . We went right round to the west coast _______ sea instead of driving across the continent.