The reason _____ he was late for school was _____ he had to send his mother to a hospital.

A. that; why B. why; because

C. why; that D. that; because

C

【解析】

試題分析：C考查定語從句和表語從句。本題第一空是由why引導的是定語從句，修飾名詞the reason，后面定語從句的句子結(jié)構(gòu)很完整，所以使用關系副詞。第二空是that所引導的表語從句，that在句中不充當任何成分，只起引導和連接的作用。句意：他上學遲到的原因是他要送媽媽去醫(yī)院。故選C。

考點：考查定語從句和表語從句

考點分析： 試題屬性
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