My comments:: although I'm not very good at English but I have some advices for you:
1. Plz check your essay (or every thing you've written) carefully, try to avoid some mistakes like missing words, or the way of using words.
<div class='quotetop'>Trích dẫn</div>
Living in the country side, you can breath fresh air.[/b]
2. Your body must support your conclusion, or your main opinion. As I see, your arguements about the benefits of living in the city in the body are stronger than argumentsof the country. So your conclusion does not suitable to what you have written.
3. Pz avoid repeat. That seem to be unusual and waste of time.
<div class='quotetop'>Trích dẫn</div>
However, you don't have fresh air and always stand pollution.
Living in the country side, you can breath fresh air.[/b]
4. Plz leave blank between your paragraph because my vision it's not good at all.
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Well, that just my ideas about what have you written. It's maybe wrong but don't get it wrong, I don't want to show up after all.
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My essay
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Living in cities has their own benefits but also has lots of disadvantages as well.
Cities are where the industry have grown. So, obviously cities's environment will be badly affected. Smogs from cars, motocycles and in fact, factories have led to the air pollution. Moreover, the air polution may probably cause some diseases which shorten human's life; for example: lungs's cancer. Furthermore, the foods in cities are not good for health after all, they would cause illnesses like cancer too. So, consequently, living in cities may affect your health in negative way.
I don't like to live in countries neither
Although country has no pollution but it has a terrible life: no technology, bad education and bad living condition. Roads are dirty, lots of "excrements" on the roads. If you're stress, you can't go to cinema, ot theatre, to relax. Furthermore, the electricity network at countryside is terribleso obviously you can't using your television or your computer probably.
At the conclusion, I think that living in cities, or countries, have their own disadvantages so where people want to live, it's depends on them. Me, I have no idea about living in cities nor countries.
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Well that my own opinion. I have a balanced view and I mostly wrote about disadvantages of both place of living. It's seem that I'm not an interesting pupil
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[This essay has lot of mistakes, plz correct it if you want to. Feel free, I am not a monster ]