◎ 题干
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—She must have gone back to the valley. 
—No, she_________. The entrance to it was nowhere to be found.
A.mustn’tB.needn’tC.couldn’tD.may not
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“.—She must have gone back to the valley.—No, she_________. The entrance to it was nowhere to be found. A.mustn’tB.needn’tC.couldn’tD.may not…”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。