单项选择题

Not until I had read your letter ______ the true state of affairs.

A．I understood
B．did I understand
C．I did understand
D．I understand
<上一题 目录 下一题>
热门 试题

单项选择题
I put my book on the desk, but now it's gone. It ______.
A．may be stolen
B．must be stolen
C．must have been stolen
D．must have stolen
单项选择题
It is high time that we ______ our own decisions.
A．make
B．to make
C．made
D．have made
相关试题