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55,He doesn't know ( ) why she is angry.A,reason B,a reason C,the reasons 不知选哪个

分类: 作业答案 • 2021-12-18 11:27:06

问题描述：

55,He doesn't know ( ) why she is angry.A,reason B,a reason C,the reasons 不知选哪个

答

选B.他不知道她生气的原因,由why引导的原因定语从句.