问题标题:
—Areyoufreeafterschool?—Sorry.I'veplannedtotreatafriendofminetodinner_______forhishelp.AinchargeBinhonourCinreturnDinturn
问题描述:

—Areyoufreeafterschool?

—Sorry.I'veplannedtotreatafriendofminetodinner_______forhishelp.

A

incharge

B

inhonour

C

inreturn

D

inturn

李随成回答:
  序号参考答案1C
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