假如你是李飞，在外工作多年以后，回到了家乡。你发现家乡发生了巨大的变化。请你根据下面表格的内容,以Changes in My Hometown描述一下这些变化。

　　要求：词数80左右，可以用used to的句型。

　　Changes in My Hometown

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　　One possible version:

　　Changes in My Hometown

　　Great changes have taken place in my hometown these years. There used to be old and low houses on the streets,but now you can see people live and work in tall buildings. In the past, you could always see rubbish everywhere. But now the environment is clean and tidy. Many trees are planted on both sides of the street, so the air is very fresh.There were not any buses in my hometown, so most of us used to walk to work or go to school by bike.However, life is much better now. Many people buy their own cars, so they go out by car.