问题描述：
6.–We have booked a room for today and tomorrow.–____,sir.
14.–I’m sorry to have kept you waiting.–____,Bill.
A.You’re welcome B.Go ahead C.Don’t mention it D.No problem
选哪项,为什么?
14.–I’m sorry to have kept you waiting.–____,Bill.
A.You’re welcome B.Go ahead C.Don’t mention it D.No problem
选哪项,为什么?
问题解答：
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