How much --------this pair of glasses Ninety dollars ------------_英语解答

How much --------this pair of glasses Ninety dollars -------------enough.
A.are;is B.is;are C.are;are D.is;is
请说明原因

人气：388 ℃　时间：2019-12-12 21:18:19

解答

B
pair 做主语是看做单数,故用is
dollars 是可数的,所以用are
很简单的,不要想复杂.