单项选择题

Charles Babbage is generally considered ______ the first computers.

A．to invent
B．inventing
C．to have invented
D．having invented
<上一题 目录 下一题>
热门 试题

单项选择题
You don't know about the difficulty I had ______ the work then at all.
A．done
B．to do
C．for doing
D．in doing
单项选择题
If you go to the movie tonight, so ______ I.
A．will
B．do
C．am
D．can
相关试题