问题
It was over a decade _______ they paid off all their debtYou can imagine what a hard life they had.[ ]
A: before
B: until
C: after
D: while
B: until
C: after
D: while
正确答案是：
同类题型
Mum disagreed with my suggestion that we ________ skating this weekend.
What would you do if you ____ a million dollars–I’d give it to the charity
It is said there’ll be ▲ talk on teenage problems next Monday.
What the doctors really doubt is ____ my mother will recover from the serious disease soon.[ ]