◎ 题干
It won't be _____ he _____ up with us.
[     ]
A. long before; catches  
B. before long; catches
C. for long; caught  
D. long until; will catch
◎ 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“It won't be _____he _____up with us.[ ]A. long before; catchesB. before long; catchesC. for long; caughtD. long until; will catch…”主要考查了你对  【从属连词】【一般现在时】  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。