IV. Fill in each blank with One correct word
35 you can take these bottles to the factory to __them
36 If we trun off the lights when are not using them, we will save a __
37 If we recycle old newpaper, we will__ a lot of trees
38 If we walk or cycle to school, we will imporve our health and__pollution
39 recycling starts when we put rubbish shuch as empty bottles and cans in the recycling__