◎ 题干
— There's somebody at the door. Who _____ it be? Is it the postman?
— No. It _____ be him. It's just seven o'clock. It's too early.
                  
[     ]
A. may; can't         
B. will; won't        
C. may; mustn't
◎ 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“— There's somebody at the door. Who_____ it be? Is it the postman?— No. It_____be him. It's just seven o'clock. It's too early.[ ]A. may; can'tB. …”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。