A. Can you help with it?
B. Can you stay a few minutes?
C. It’s your duty to fix it.
D. Hold on, please.

50. Student A: Thanks a lot. I really enjoyed your company.
   Student B: Don’t mention it. ____.
A. Sorry to keep you out
B. Many happy returns of the day
C. Same here
You’re too polite
参考答案
 
1-10  BCBAD  CCCCB    11-20   DCDAB  ACADD   21-30 ACCDB ACDBB
31-40 DBAAC  DBBDC    41-50 CAAAB CCBA

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