◎ 题干
— Hasn't the thief admitted his crime by now?  
— No, ______ questioned many times.
[     ]
A. if              
B. though          
C. unless        
D. once
◎ 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“— Hasn't the thief admitted his crime by now? — No, ______ questioned many times. [ ]A. ifB. though C. unlessD. once…”主要考查了你对  【从属连词】  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。