Class Two ____ taking their lessons when there was a knock at the door.为什么A. is B. are C. was D. were

分类: 作业答案 • 2022-07-15 15:41:15

问题描述：

Class Two ____ taking their lessons when there was a knock at the door.为什么
A. is B. are C. was D. were

答

B.are 这里表示同学在上课
是指人所以用复数形式