Doing morning _____(exercises\exercise)is a good way to keep healthy.为什么答案是exercises?运动不是不加s吗?

Doing morning _____(exercises\exercise)is a good way to keep healthy.为什么答案是exercises?运动不
是不加s吗?

答案是对的,做早操要加S
只有做动词不用加S
加油!不明白再问!

早操眼操的exercise可数

要加s