11. We agreed to accept ________ they thought was the best tourist guide.

　　A. whatever

　　B. whomever

　　C. whichever

　　D. whoever

　　12. It is our ________ policy that we will achieve unity through peaceful means.

　　A. consistent

　　B. continuous

　　C. considerate

　　D. continual

　　13. Between 1974 and 1997, the number of overseas visitors expanded ________27%.

　　A. by

　　B. for

　　C. to

　　D. in

　　14. Although many people view conflict as bad, conflict is sometimes useful ________ it forces people to test the relative merits of their attitudes and behaviors.

　　A. by which

　　B. to which

　　C. in that

　　D. so that

　　15. He is ________ about his chances of winning a gold medal in the Olympics next year.

　　A. optimistic

　　B. optional

　　C. outstanding

　　D. obvious

　　16. Sometimes I wish I ________ in a different time and a different place.

　　A. be living

　　B. were living

　　C. would lived

　　D. would have lived

　　17. The director was critical ________ the way we were doing the work.

　　A. at

　　B. in

　　C. of

　　D. with

　　18. In a sudden ________ of anger, the man tore up everything within reach.

　　A. attack

　　B. burst

　　C. split

　　D. blast

　　19. ________ she realized it was too late to go home.

　　A. No sooner it grew dark than

　　B. Hardly did it grow dark that

　　C. Scarcely had it grown dark than

　　D. It was not until dark that

　　20. In Britain people ________ four million tons of potatoes every year.

　　A. swallow

　　B. dispose

　　C. consume

　　D. exhaust