◎ 题干
—What's going on between you and Peter?  
—We had a fight. I regarded him as my trustworthy friend _____ to my shock, he gave me away.  
[     ]
A. unless        
B. since        
C. if          
D. until
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—What's going on between you and Peter? —We had a fight. I regarded him as my trustworthy friend_____ to my shock, he gave me away.[ ]A. unlessB. sinceC. …”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。