◎ 题干
— Hi, Johnson, any idea where Susan is?    
— It's class time, so she          in the classroom now.  
A. can be
B. must have been
C. might have been
D. should be
◎ 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“— Hi, Johnson, any idea where Susan is?— It's class time, so shein the classroom now. A. can beB. must have beenC. might have been D. should be…”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。