He ______ for her for one hour by the time she arrived there.A、has been waiting

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问题 He ______ for her for one hour by the time she arrived there.

选项 A、has been waiting
B、has waited
C、had been waiting
D、waited

答案 C

解析本题考查的是主、从句谓语动词时态一致的用法。by the time意思是“到什么时间为止”，从句的时态是一般过去时，说明主句的动作应该发生在从句的动作之前，且主句中有表示一段时间的状语for one hour，所以应该用过去完成进行时，故选项C为正确答案

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