◎ 题干
—Hi, Johnson, any idea where Susan is? 
—It’s class time, so she          in the classroom now.
A.can beB.must have beenC.might have beenD.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 she in the classroom now.A.can beB.must have beenC.might have beenD.should be…”主要考查了你对  【虚拟语气】【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。