单项选择题

You ______ all those calculations! We have a computer to do that sort of thing.

A．needn't have done
B．should not have done
C．must not have done
D．can not have done
<上一题 目录 下一题>
热门 试题

单项选择题
In the advanced course, students must take objective tests ______ monthly intervals.
A．with
B．for
C．on
D．at
单项选择题
______ in the earthquake thoroughly, the city has now been rebuilt.
A．Destroying
B．Destroyed
C．Having destroyed
D．To be destroyed
相关试题