◎ 题干
More than a dozen students in that school _____ abroad to study medicine last year.    

A. sent                          
B. were sent    
C. had sent                    
D. had been sent
◎ 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“More than a dozen students in that school _____abroad to study medicine last year. [ ]A. sentB. were sent C. had sent D. had been sent…”主要考查了你对  【一般过去时的被动语态】  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。