◎ 题干
   the old man    in this factory when he was young ?  
[     ]
A. Did, used to work  
B. Does. Used to working      
C. Did, use to work   
D. Do, used to work
◎ 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“ the old manin this factory when he was young ? [ ]A. Did, used to workB. Does. Used to workingC. Did, use to workD. Do, used to work…”主要考查了你对  【一般过去时】【一般疑问句】  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。