He’s as a “bellyacher” —he’s always complaining about something.A. who is known B. whom is

发布时间：2020-08-17 14:46:53

He’s     as a “bellyacher” —he’s always plaining about something.
A. who is known
B. whom is known
C. what is known
D. which is known

网友回答

A. who is known
B. whom is known
(答案→)C. what is known
D. which is known
解析：本题考查关联词，应用连接what引导表语从句。
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