This is one of the longest bridges that ______on this river.

This is one of the longest bridges that ______on this river.
A is ever built B have ever been built C was ever built D has ever been built
选B 为什么不选D 不是单三么?
英语人气:511 ℃时间:2019-11-17 22:17:25
优质解答
这种情况下(one of ...s) 后面的定语从句修饰的是 后面的复数名词.
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