My head-teacher helped me a lot when I was in trouble. I do wish I could do some

题干

My head-teacher helped me a lot when I was in trouble. I do wish I could do something for him__________ one day.

A．in turn

B．in common

C．in return

D．in theory

上一题下一题 0.85难度单项选择更新时间:2013-01-25 05:25:02

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