◎ 题干
——Can I walk across the road now, mum?
——No, you_______. You have to wait until the light turns green.
A.couldn'tB.shouldn'tC.mustn'tD.needn't
◎ 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“——Can I walk across the road now, mum?——No, you_______. You have to wait until the light turns green.A.couldn'tB.shouldn'tC.mustn'tD.needn't…”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。