作者:陈瀚戈; 周敏(指导)cityexhaustmessy
摘要:Our city is becoming more and more messy and dirty. What can we do to keep our city clean and beautiful? I have some good ideas? To keep our city clean and beautiful, we can take bus and metro to school, because vehicle exhaust (尾气) makes urban (城市的)air dirty.
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