问题
单项选择题
Never before（）see such a terrible car accident on the road!
A.I have
B.have I
C.I did
D.did I
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
Never before（）see such a terrible car accident on the road!
A.I have
B.have I
C.I did
D.did I
参考答案：D