◎ 题干
— Why do you look so worried?
— My computer broke down and my essay _____ since.

[     ]

A. has been left unfinished
B. has left to finish
C. was left to finish
D. had been left unfinished
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—Why do you look so worried?— My computer broke down and my essay _____ since. [ ]A. has been left unfinished B. has left to finish C. was left to finish D.…”主要考查了你对  【现在完成时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。