◎ 题干

—Why did you arrive late?
—The fog _____ our air flight for about half an hour.
A.held upB.turned down C.broke upD.pulled down
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Why did you arrive late? —The fog _____ our air flight for about half an hour.A.held upB.turned down C.broke upD.pulled down…”主要考查了你对  【动词短语】【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。