问题
选择题
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
答案：B
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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：B