網友回答：
good environment can make people feel happy. to improve the environment means to qualify our life . what should we do to improve our environment ? lakes and fields . whenever we see litter on the ground ，
溫馨提醒：隨時光變遷，文中所陳述觀點；準確性、難免有所變動，因此文中觀點僅供參考。
