◎ 题干
He _____ the key, so we _____ into the office.

A. hadn't left; can't
B. didn't leave; couldn't have got
C. hadn't left; couldn't get
D. hasn't left; couldn't get
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“He _____ the key, so we _____ into the office. [ ]A. hadn't left; can'tB. didn't leave; couldn't have got C. hadn't left; couldn't get D. hasn't l…”主要考查了你对  【一般过去时】【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。