◎ 题干
By the time I ____________, I realized that I had left my umbrella in the shop.
A.arrived at homeB.reach homeC.got to homeD.arrived home
◎ 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“By the time I ____________, I realized that I had left my umbrella in the shop.A.arrived at homeB.reach homeC.got to homeD.arrived home…”主要考查了你对  【一般现在时】【过去进行时】【过去完成进行时】  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。