◎ 题干
— Look at the boy running on the ground, Is it David?
— It _____ be him, he has just gone to the teacher's office.

[     ]

A. must
B. can't
C. could
D. may
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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 David?— It _____be him, he has just gone to the teacher's office. [ ]A. must B. can't C. could D. may …”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。