◎ 题干
—Sorry,Mum, I lost my key to the bicycle again.
—Oh! How         you be so careless! You have to learn to look after your belongings.
A.canB.mayC.must D.dare
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Sorry,Mum, I lost my key to the bicycle again.—Oh! How you be so careless! You have to learn to look after your belongings.A.canB.mayC.must D.dare…”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。