单项选择题

I will not lend the book to you ______ you can return it in time.

A．in case
B．so that
C．unless
D．if
<上一题 目录 下一题>
热门 试题

单项选择题
He ______ for her for one hour by the time she arrived there.
A．has been waiting
B．has waited
C．had been waiting
D．waited
相关试题