◎ 题干
—I'm sure you          the tickets in the office.  Hurry up to get them!        
—Sorry, wait a minute, I'll get them at once.           
[     ]
A. have forgotten      
B. have left        
C. had left
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—I'm sure you the tickets in the office.Hurry up to get them! —Sorry, wait a minute, I'll get them at once.[ ]A. have forgotten B.have left C.had left…”主要考查了你对  【现在完成时】  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。