what we want____textbooks A are B is C were D was

问题描述:

what we want____textbooks A are B is C were D was

答案:B is
释疑:该句意思是:我们所需要的是书.其中what we want(我们所需要的)是主语从句,作主语时,谓语动词用第三人称单数形式.
悄悄话:祝你新年快乐!兔年顶呱呱!