The local health organization is reported ______ twenty-five years ago when Dr. Ardon became its first president.

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问题 The local health organization is reported ______ twenty-five years ago when Dr. Ardon became its first president.

选项 A、to be set up
B、being set up
C、to have been set up
D、having been set up

答案C

解析 该句是一被动句,空当中填入的是主语补足语。report不属于see,hear,find这一类“感官”动词,不能与-ing而只能跟不定式作主语的补足语(与report的这种用法类似的动词还有 say,think等),根据这一点,可将B和D排除。剩下的两个选项的差别在于时态。解此题的关键是看不定式表示的动作与主句的动作是同时发生,还是在其之前发生。本题中的时间状语twenty- five years ago明确表示不定式动作发生在主句动作之前,应该用完成时,因此,C为正确答案。
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