单项选择题

I think it is hard to ______ what you said.

A．ensure
B．convince
C．agree
D．believe
<上一题 目录 下一题>
热门 试题

单项选择题
By the time you get there tomorrow,they ______ for Beijing.
A．will have left
B．are leaving
C．will leave
D．are to leave
单项选择题
You'd better ______ the water until it has been boiled.
A．not to drink
B．not drink
C．not drunk
D．not drinking
相关试题