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【题目】He has five __________, and they are all doctors working in the same hospital.

A. sons-in-laws B. son-in-laws

C. sons-in-law D. son in laws

【答案】C

【解析】句意:他有五个女婿,都是在同一个医院工作的医生。合成名词变复数,将词尾S加在主要名词后面。

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