◎ 题干
—Look at the boy running on the ground. Is it Davis?
—It _____ be him. I saw him go to the teacher's office just now.
[     ]
A. must
B. can't
C. could
D. might
◎ 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“—Look at the boy running on the ground. Is it Davis? —It _____ be him. I saw him go to the teacher's office just now. [ ]A. must B. can'tC. could D. mi…”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。