问题描述：
----Shall I give ou a ride as you look so tired?----- Thank you._________.
A.It's your duty B.Don't mention it C.Do as you like D.It couldn't be better应该选哪一个?
A.It's your duty B.Don't mention it C.Do as you like D.It couldn't be better应该选哪一个?
问题解答：
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