◎ 题干
—Hi,Joan.Any idea where Tom is?
—He ________ on the playground.I saw him there playing football just now.
A.shall be B.should have been
C.must be D.might have been
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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,Joan.Any idea where Tom is?—He ________ on the playground.I saw him there playing football just now.A.shall beB.should have beenC.must beD.might have 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。