◎ 题干
Who's that boy reading in the garden? Is it David?
_ It __________ be David. I saw him in the classroom just now.
[     ]
A. must
B. can't
C. may
D. shouldn't
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“_Who's that boy reading in the garden? Is it David?_It __________ be David. I saw him in the classroom just now.[ ]A. mustB. can'tC. mayD. shouldn't…”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。