题目内容：

根据短文内容，用括号内单词的恰当形式填空。

I works in a city school now. Ten years ago, I left my home town to come here. The city is 1. (busy) than my home town. The population of it is also much 2. (large). There are a lot of big supermarkets here and people can buy all kinds of food. But I still miss my home town. Because the weather in the city is3. (cold) than that in my home town. And the air in the city isn’t as 4. (fresh) as my home town. The water in my home town is much5. (clean). I’d like to go back to my home town to live one day.