环保词汇：green, recycle, save — 英语填空题
题目
选择方框中的词填空（每词限用一次）：green / recycle / save
We should ___ old bottles and paper instead of throwing them away. Planting more trees can make our city ___ and beautiful. Please turn off the tap to ___ water at home.
第一个空：___；第二个空：___；第三个空：___