◎ 题干
When I got home, my parents _____ for an hour.
[     ]
A. has got back
B. has gone back
C. had back
D. had been back
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“When I got home, my parents _____ for an hour. [ ]A. has got back B. has gone back C. had back D. had been back …”主要考查了你对  【过去完成时】  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。