高等继续教育 / 大学英语I
正确率：100%
题型描述: 单选题
Never before _ _ _ _ _ _ _ _ _ see such a terrible car accident on the road!
A. I did
B. I have
C. have I
D. did I
Never before _ _ _ _ _ _ _ _ _ see such a terrible car accident on the road!
A. I did
B. I have
C. have I
D. did I
参考答案：