单项选择题

A. No problem.
B. You are so kind.
C. Yes, I’d like to.
D. Thank you.
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单项选择题
A. Never mind. B. Yes, thank you. C. Don’t mention it. D. Yes, you can.
A. Never mind. B. Yes, thank you.
C. Don’t mention it. D. Yes, you can.
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