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-Excuse me, where is Dr Smith.s office?
-________.
单选题 (10 分) 10分
A.
You can.t ask me. I don.t know, either.

B.
Sorry, I don.t know. But you can ask the man over there.

C.
Please don.t say so.

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出自：国家开放大学人文英语4

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