◎ 题干
It was over a decade _______ they paid off all their debt. You can imagine what a hard life they had.
[     ]
A. until    
B. before    
C. after    
D. while
◎ 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 was over a decade _______ they paid off all their debt. You can imagine what a hard life they had. [ ]A. untilB. beforeC. after D. while…”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。