◎ 题干
Half of the work ______ by now.
A. has finished              B. has been finished       C. have been finished
◎ 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“Half of the work ______ by now. A. has finished B. has been finished C. have been finished…”主要考查了你对  【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。