◎ 题干
Claire had luggage _____ an hour before her plane left.

A. check
B. checking
C. to check
D. checked
◎ 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“Claire had luggage _____an hour before her plane left. [ ]A. check B. checking C. to checkD. checked …”主要考查了你对  【过去分词】  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。