◎ 题干
— How long____at this job?  
— Since 1990. 
[       ]
A. were you employed  
B. have you been employed  
C. had you been employed  
D. will you be employed
◎ 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____at this job?— Since 1990.[ ]A. were you employedB. have you been employedC. had you been employedD. will you be employed…”主要考查了你对  【现在完成时的被动语态】  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。