He is good at maths and it won’t be long ____ he works out the problem. A．since B．until C．before D．w...
2023-01-12 08:20:26 53次 云南省2010届高三上学期期末考试试题（英语） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He is good at maths and it won’t be long
____ he works out the problem.
|
A．since
|
B．until
|
C．before
|
D．when
|
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