赞题库-背景图

单项选择题

So little ______ about chemistry that the lecture was completely beyond me.

A．did I know
B．I know
C．do I know
D．I knew

<上一题目录下一题>

热门试题

单项选择题Had I known the result, I ______ you to tell me.

A．would not ask
B．would not have asked
C．had not asked
D．have not asked