单选题
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
【正确答案】
B
【答案解析】
[注释] 此题中so表示程度,因此句子需要部分倒装。B和D都是倒装句,区别在于时态。
提交答案
关闭