谁知道 A series of debates between the lectures____scheduled for the next weekend.

分类: 作业答案 • 2022-01-09 18:02:03

问题描述：

谁知道 A series of debates between the lectures____scheduled for the next weekend.
A were B are C have been D was
为什么会选D的,..

答

因为 a series of 是一系列的意思,整个主语归为一个整体,是单数,所以谓语动词使用单数形式,这里面唯一一个单数形式就是D