◎ 题干
— I can't find my cell phone in my bag.
     __ it at home.
[     ]
A. Have you left
B. Did you leave
C. Had you left
D. Do you leave
◎ 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“— I can't find my cell phone in my bag.—__ it at home. [ ]A. Have you leftB. Did you leaveC. Had you leftD. Do you leave…”主要考查了你对  【一般过去时】  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。