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(单选题)
( )9. —Thanks for helping me with My homework.
—_____
(本题3.0分)

A、 No, you needn.t.
B、 It.s my duty.
C、 Oh, it was no trouble at all. I.m glad I could help.
D、 Nothing serious.

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出自：佳木斯大学-大学英语Ⅱ(专升本)

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