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    【题目】— Why do you look very upset?

    — The electricity was cut off suddenly and my essay ________ unfinished since.

    A. was leftB. has left

    C. had been leftD. has been left

    【答案】D

    【解析】

    考查时态语态。句意：——你为什么看起来很沮丧？——突然停电了，那时我的文章就没写完。句中leave与主语essay 构成动宾关系，要用被动形式；句中时间状语since表示从那时起到现在文章一直没写完，是现在完成时态的时间状语。故选D。

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