You’d better do morning _every day .It’s good to have lots of ___.

问题描述:

You’d better do morning _every day .It’s good to have lots of ___.
A exercises ; exercise B exercise ; exercise C exercise ; exercises
应选那个 为什么?

exercise 可数名词,体操,(一种)运动 do morning exercises
不可数名词:体格锻炼,运动,
第一空是做早操,所以用复数形式
第二空是指锻炼 所以是不可数