◎ 题干
—John saw a three-year-old child walking alone in a shopping mall , so he took the child home immediately and called the police .
—But he           have waited with the child until the parents returned .
A.shouldn’t B.could C.would D.might
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ —John saw a three-year-old child walking alone in a shopping mall , so he took the child home immediately and called the police . —But he have waited with the …”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。