He has given me so much help that I really want to do something for him ______.A_刷题宝

题干

He has given me so much help that I really want to do something for him ______.

A．in return	B．by turns
C．in turn	D．in total

上一题下一题 0.64难度单项选择更新时间:2015-05-14 06:56:40

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