Big changes have taken place at the Marketing Department_____the new manager cam

游客2023-10-02 45

问题 Big changes have taken place at the Marketing Department_____the new manager came.

选项 A、before
B、after
C、since
D、while

答案 C

解析考查引导时间状语从句的连词。空格前是主句，“市场部发生了重大变化”使用了现在完成时，下空格后“新经理上任”使用了一般过去时，故主句的动作应发生在从句之后。从意义上判断，过去发生的动作(came)对现在产生了影响(have taken place)，故应填入C项since“自从”。

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