◎ 题干
—Where _______ Margaret have put the empty bottles?
—She ______ them away. They must be somewhere.
A.can; can’t have thrownB.must; needn’t
C.must; must have thrownD.can; must throw
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Where _______ Margaret have put the empty bottles? —She ______ them away. They must be somewhere.A.can; can’t have thrownB.must; needn’tC.must; must hav…”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。