单项选择题

So little（）about physics that the lecture was completely beyond me.

A. I knew
B. did I know
C. I had known
D. had I known

<上一题 目录 下一题>
热门 试题

单项选择题
The project is designed to provide young people（）work.

A. to
B. for
C. in
D. with
单项选择题
Once environmental damage（）, it takes many years for the system to recover.

A. has done
B. is to do
C. does
D. is done
相关试题