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最佳答案：it's difficult to us to avoid the corwd traffic
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最佳答案：if there are less cars,it's caused by the heavy traffic.
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最佳答案：The population problem resulting in water and energy shortages,the city is crowd
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最佳答案：City life rich and colorful, but have a lot of problems, such as air pollution b
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最佳答案：As more and more cars, causing traffic congestion also pollutes the air
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最佳答案：done sth (做了一些什么）
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最佳答案：There are more and more cars in our lifeThe heavy ttraffic will be reliefedThe a
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最佳答案：City of the living environment more and more bad, poor air quality, everywhere i
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最佳答案：Taxies is My favorite traffic tool,it is convenient and time-saving,but I prefer
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最佳答案：Take care!The traffic on the road of a city is busy.Although it is very cold in