—Why do you look worried? —Fred left the company half an hour ago. His work ________ unfinished since.
A.left
B.was left
C.has left
D.has been left
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根据n多题专家分析,试题“—Why do you look worried?—Fred left the company half an hour ago. His work ________ unfinished since.A.leftB.was leftC.has leftD.has been left…”主要考查了你对 【一般现在时】,【将来进行时】,【过去完成进行时】,【过去将来时的被动语态】 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。
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