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

2 . 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）

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

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

5 . They dug a hole and ______ (bury) the money.

6 . She is struggling ______（bring）up a family on a very low income.(所给词的适当形式填空)

7 . She may prove _________ (be) the most suitable person for the job. (所给词的适当形式填空)

8 . At present many new buildings ________ (build) along the river. （所给词的适当形式填空）

9 . We should have a ________ (balance) diet rich in fruit and vegetables. (所给词的适当形式填空）

10 . If we do miss hearing Big Ben on a regular __________ (basic), we could always set its sound as our message tone. （所给词的适当形式填空）