Never before _______ see such a terrible car accident on the road!
Never before _______ see such a terrible car accident on the road!
A、I have
B、have I
C、I did
D、did I
【正确答案】:D
【题目解析】:Never before 提前要引起倒装,因此排除AC,由于see 是原形,因此排除 B 选项,使用have作助动词时,一般在现在完成时,have done 的形式。

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