He’s ______ as a "bellyacher" -- he’s always complaining about something.A、who i

游客2024-10-05  9

问题 He’s ______ as a "bellyacher" -- he’s always complaining about something.

选项 A、who is known
B、whom is known
C、what is known
D、which is known

答案 C

解析 what引导名词从句在句中作主语补足语。
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