帮忙找出英语作文中的错误 找错 不是把它改得更好 找出错误的语法

帮忙找出英语作文中的错误 找错 不是把它改得更好 找出错误的语法
Many people move from the cities to the countryside.Because the rivers in the countryside are cleaner than those in the city.The air in the countryside is fresher than that in the city.It's noisier in the city than that in the countryside.The trees inthe countryside are greener than those in the city.My grandmother lives in the countryside.She is 80 years old and she is strong.I miss my grandmother.And I miss the countryside,too.