◎ 题干
— Tom, where is your father?     
— I'm not sure. He ______ in his office.
[     ]
A. is
B. may be
C. maybe
D. may
◎ 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“—Tom, where is your father? — I'm not sure. He ______ in his office. [ ]A. is B. may be C. maybe 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。