◎ 题干
She hasn't had any success _____.
[     ]
A. so long    
B. before long    
C. by then  
D. so far
◎ 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“She hasn't had any success _____. []A. so longB. before longC. by then D. so far…”主要考查了你对  【时间副词】  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。