◎ 题干
This book _____ Tom's father's, because his name is on the book.
[     ]
A. maybe      
B. may be      
C. must be      
D. must
◎ 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“This book _____ Tom's father's, because his name is on the book. [ ]A. maybe B. may beC. must beD. must …”主要考查了你对  【情态动词】【系动词】  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。