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最佳答案：It is very important to deal with the rubbish in cities．Every day people living
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最佳答案：nowadays,the environmental problem has caused a great threat to our health.there
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最佳答案：Saving our cityNowadays,we find the environemnt around us become more and more w
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最佳答案：As we all known ,with the large popularation waved into the city ,the pollution