11. His visit to London last spring is ______ as a great success.

　　A. looked into

　　B. looked to

　　C. looked over

　　D. looked upon

　　12. You will complete your project more easily if you take ______ of all the facilities here.

　　A. privilege

　　B. advantage

　　C. chance

　　D. care

　　13. Seventy guests had been invited to the party, but only fifty ______.

　　A. turned around

　　B. showed up

　　C. turned out

　　D. showed off

　　14. All we can do is to hope this chemical plant will take ______ to reduce air pollution.

　　A. measures

　　B. ways

　　C. positions

　　D. methods

　　15. She was just too busy yesterday, ______ she would surely have gone there with you.

　　A. however

　　B. for

　　C. therefore

　　D. otherwise

　　16. He found it hard to concentrate on his writing ______ so many people around.

　　A. when

　　B. during

　　C. because

　　D. with

　　17. When she was five, the girl’s father decided to ______ a pianist of her.

　　A. develop

　　B. build

　　C. make

　　D. do

　　18. ______ automobile pollution, the air quality in this city has become worse.

　　A. As a result of

　　B. In spite of

　　C. But for

　　D. As for

　　19. Her friends did not expect her to ______ all their suggestions.

　　A. turn down

　　B. turn over

　　C. take off D. take away

　　20. The motor isn’t ______ enough to push the car up the hill.

　　A. tough

　　B. powerful

　　C. strong

　　D. big