What we need( ) good textbooks.A isWhat we need( ) good textbooks.A is B are C have D has

问题描述:

What we need( ) good textbooks.A is
What we need( ) good textbooks.
A is B are C have D has

选b what 引导的主语从句谓动词的单复数形式应该看后面所指的具体内容textbooks 所以选b