◎ 题干
-- Is it your brother playing football outside?
-- It ________ be him. He is helping mother with dishes now.
A.must B.can’t C.mustn’t D.can
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“ -- Is it your brother playing football outside? -- It ________ be him. He is helping mother with dishes now.A.mustB.can’tC.mustn’tD.can…”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。