◎ 题干
The coal miners________in the coal mine for 10 hours before we came to their rescue.
[     ]
A.had trapped  
B.had been trapping
C.had been trapped  
D.would have been trapped
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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 coal miners________in the coal mine for 10 hours before we came to their rescue.[ ]A.had trappedB.had been trappingC.had been trappedD.would have been trapp…”主要考查了你对  【过去完成时的被动语态】  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。