◎ 题干
When I got home I realized that one of my suitcases ________.
[     ]
A. disappears    
B. disappeared  
C. has disappeared    
D. had disappeared
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据魔方格专家分析,试题“When I got home I realized that one of my suitcases ________. [ ]A. disappears B. disappeared C. has disappeared D. had disappeared …”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。