题目内容

-- Why do you look so worried?
-- My computer broke down and my essay _____ since.
A．has been left unfinishedB．has left to finish
C．was left to finishD．had been left unfinished
A
考查时态，句意：你为什么看起来如此担心：——我的电脑崩溃了，我的论文后来就一直没有完成。结合句意可知下文描述的是现在已经完成的动作故用完成时态，论文以被遗留的对象故用被动语态。选项BC语义不符，故选A。
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