2013年公共英语三级考试模拟练习题（15）
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