1.  Doing morning exercises _____ our health and we _____it.

 A. benefit to, benefit   B. benefits, benefit from

 C. benefits from, benefit  D. benefit, are benefited from

1.  After the bell rings, which indicates the ending of the exam, you_____ stay ____ you are until all your papers are collected.

 A. shall, where   B. would, where   C. will, in which   D. can, what

1.  I went to bed early _____ the sleep lost last night.

 A. to make up   B. gaining back   C. making up   D. to gain

1.  ---What made you so angry?

 A. Mary’s leaving, instead of   B. Mary’s left, instead of

 C. Mary’s leaving, without     D. Mary”s leaving, instead

1.  News reports say peace talks between the two countries _____ with no agreement reached.

 A. have broken down   B. have broke out

 C. have broke in       D. have broke up

.The Red Army ____ more than 25,000 li and arrived at North Shanxi at last.

A. walked   B. ran   C. covered   D. travel

---Do you like the new pen?

  ---Yes, it_____ smoothly.  

A. is written   B. is writing   C. writes   D. wrote

In order to produce more grain, it________that the area of farmland_____.

 A. is demanded, being increased   B. has been demanded, be increased

 C. demand, should be increased   D. demands, should increase

There is a board by the road, which _____ “Parking_____!”

 A. writes, forbidding   B. reading, forbidding

 C. says, forbidden     D. saying, forbidden

20. They found there was_____ to weigh such an elephant.

 A. big enough nothing   B. nothing enough big

C. enough nothing big   D. nothing big enough