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　　Great changes have taken place in shanghai and more and more people throughout the world are focusing their attention on shanghai now. as a citizen of shanghai, i feel i must spare no efforts to do my bit. first, i decide to help plant more trees to make our city more beautiful. secondwww.diyifanwen.com, i should obey seven nos and be good at learning from others. third, i should study hard so that i can do something better for my city in the future.