◎ 题干
Two fifths of the work __________ by computer last year.
[     ]
A. are done
B. is done
C. were done
D. was done
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Two fifths of the work __________ by computer last year.[ ]A. are doneB. is doneC. were doneD. was done…”主要考查了你对  【被动语态】【一般过去时】【主谓一致】  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。