14. The government has taken some measures to solve the shortage of electricity, but it may be some time________ the situation improves.

A. since　　　　　 　 B. when 　　　　 　C. unless　　　 　　 　　D. before

13. Although she was convinced that they were too different to be as close as before, Helen ________ the courage to call her old friends.

A. picked up　 　　　 　　B. kept up　 　　　　 　C. took up　 　　　 D called up

12. He ________ millions of dollars very easily by only signing his name to contracts, but he refused to use his name for selfish ends.

A. should have made　 　 B. must have made　

C. could have made 　 　　D. can have made

11. What ________ public is concerned about is whether ________ workers and scientists will be able to find ________cure for this new disease.　

A. the ; 不填; a　 　　 　　B. the; the; the　 　

C. 不填; 不填; a　 　　 　　D.不填; the; the

10. I’m sorry the rooms are all booked out today. That is to say, there’s no room________ for the moment.

A. useful　　　　 　 B. available　　 C. extra　　　　　　　 D. spare

9. Mr. Smith will not answer our questions until he is sure that we ________ the meaning of each word in the sentence.

A. find out　　　　　 　 　　　 　B. have found out　　　

C. had found out　　　　　　　 D. will have found out

8. I’m afraid you’ll have to buy some new clothes because the clothes in your closet are mostly ________.

A. out of order　　　 　 B. out of shape　　　

C. out of fashion　　 　 D. out of control

7. Our bad living habits will destroy the earth. Only by changing ________we live can we save the earth.

A. that　　　　　 　　 　　B. what　　　　　 C. how　　　　　 　 D. where

6. ---Would you like to go to the concert with me, Mary?

　 --- I have got no interest in it; ________, I have lots of homework to do.

A. otherwise　　　 　　B. besides　　　 　　

C. however　　　 　　D. therefore

5. ---Dear Mary, when will our wedding be”

　 ---“Ah, when? God knows. ” She said, and 　　　　　away from him, walked rapidly away.

A. turn　 　　　　 　　 B. turned　 　　 　　

C. turning　　　 　　　 D. to turn