◎ 题干
—Look! A book is on the floor. Whose is it?
—It ______ be Rick’s. It has his name on it.
A.mustn’tB.can’tC.must D.need
◎ 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“—Look! A book is on the floor. Whose is it?—It ______ be Rick’s. It has his name on it.A.mustn’tB.can’tC.must D.need…”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。