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It used to be dirty in the countryside because farmers feed pigs, chickens, ducks and so on. The paths were narrow and with lots of dirt. When it rained heavily, it was difficult to travel. People used to live hard life and lived in low houses. There weren't any big supermarket, theatres, gyms and so on. But now, the road become wider and wider. It is easy to travel around because the transport is convenient. Most people live in tall buidings and the environment becomes clean and beautiful.
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