◎ 题干
How long have they _____?
[     ]
A. married  
B. been married  
C. be married  
D. marry
◎ 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“How long have they _____?[ ]A. married B. been married C. be married D. marry…”主要考查了你对  【系动词】【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。