单项选择题

You ______ her at the beginning, but now it is too late.

A．ought to refuse
B．have ought to refuse
C．ought to have refused
D．ought have refused
<上一题 目录 下一题>
热门 试题

单项选择题
______ , he knew a lot.
A．As he was young
B．Young as he was
C．Young was he
D．he was young
单项选择题
The first use of umbrellas was as ______.
A．protection against rain
B．a shade against the sun
C．a symbol of power
D．a symbol of honor
相关试题