单项选择题

A man escaped from the prison last night. It was a long time ______ the guards discovered what had happened.

A．before
B．until
C．since
D．when
<上一题 目录 下一题>
热门 试题

单项选择题
If it ______ Professor Russel standing up for him, he would have had to leave.
A．hasn’t been for
B．hadn’t been for
C．was for
D．were for
单项选择题
Of course, most immigrants did not get rich overnight, but the ______ of them were eventually able to improve upon their former standard of living.
A．maximum
B．minority
C．majority
D．minimum
相关试题