Doing eyes every day is good for our eyes. A. exercises B. exercise C. healthD. healthy

问题补充：

Doing eyes every day is good for our eyes.

A. exercises

B. exercise

C. health

D. healthy

答案：

A. exercises

B. exercise

C. health

D. healthy

解析：该题考查的用法，既是动词（意思为：锻炼），又是名词，当“锻炼”讲时是不可数名词，当“作早操或保健操”讲时是可数名词。故选B。