Sports is 改为are……
It not only make……改为makes
这个句子不对,前后句主语不一致了,建议：Not only it makes me happy,but also I can get a strong body.
正文第四行exercise打错了 healthier打错了 be后面句号没打
In a word后面要用逗号
better grade改为 better grades,可数名词单数不能单独使用
Better body,better life.Do more exercises so that we can learn bette