◎ 题干
Your books must _____ tomorrow.
[     ]
A. hand in
B. be handed in
C. be handed
◎ 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“Your books must _____ tomorrow. [ ]A. hand in B. be handed in C. be handed …”主要考查了你对  【被动语态】【动词短语】  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。