◎ 题干
Helen ______ be in Nanjing now, because I saw her here just now.
[     ]
A. can't
B. mustn't
C. needn't
D. won'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“Tony ________ be in the classroom. I saw him in the library just now. [ ]A. can't B. mustn't C. needn't D. won'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。