◎ 题干
— I telephoned him twice and I couldn't get through to him.
— I think that the line might have been out of  order, ____     ?  
[     ]
A. don't you        
B. wasn't it    
C. do you    
D. hadn't it
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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 telephoned him twice and I couldn't get through to him. — I think that the line might have been out oforder, ____ ? [ ]A. don't youB. wasn't it C. do…”主要考查了你对  【一般过去时】【反意疑问句】  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。