注意：此页面搜索的是所有试题
题目内容
（国家开放大学-大学英语1）
Never before _________ see such a terrible car accident on the road!
选择一项：
A.
have I
B.
did I
C.
I have
选择一项：
A.
have I
B.
did I
C.
I have
参考答案
