◎ 题干
-Whose book is this?
-It _________ be Li Ping's because there is his name on it.
[     ]
A. must  
B. may  
C. can't  
D. could
◎ 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“-Whose book is this?-It _________ be Li Ping's because there is his name on it.[ ]A. mustB. may C. can'tD. could…”主要考查了你对  【情态动词】  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。