__we must do is_the use of energy.B.What ;t__we must do is_the use of energy.B.What ;to reduce.C.What ; reduce.

分类: 作业答案 • 2021-12-20 03:34:55

问题描述：

____we must do is___the use of energy.B.What ;t
____we must do is___the use of energy.
B.What ;to reduce.C.What ; reduce.

答

____we must do is___the use of energy.B.What ;t____we must do is___the use of energy.B.What ;to reduce.C.What ; reduce.