◎ 题干
The Smiths have gone to New York for their holiday, with an old servant ____ their house.
A.looking afterB.look afterC.having looked afterD.looked after
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The Smiths have gone to New York for their holiday, with an old servant ____ their house.A.looking afterB.look afterC.having looked afterD.looked after…”主要考查了你对  【独立主格结构】  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。