网友回答：
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 decide to help plant more trees to make our city more beautiful. second， i should study hard
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
