11.----- John, may I ask you a favour?

　　----- ______

　　A. I’m sorry, but why?　　　　 B. Sure, what is it?　　 C. Yes, you could.　　　　D. I’d love to, and I’m busy.

　　12.Where was it _____the road accident happened yesterday?

　　A. when　　 B. that 　　　　C. which　　　　D. how

　　13.______you choose, make sure that it is a good one.

　　A. What 　　 B. Wherever 　　 C. Whichever 　　 D. Which

　　14.He suggested the sports meet be _______because of the bad weather.

　　A. put away　　 B. put up 　　　　C. put down　　 D. put off

　　15.I didn't manage to work out the problem _______the teacher had explained how.

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

　　答案：BBCDA

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