Question

【题目】Although it takes energy (change) something into something else, it's better than (throw) things away.

Answer 1

【答案】to change；throwing
【解析】句意：虽然把一种东西变成另一种东西会消耗能源，但还是比把东西扔掉要好。句型：It takes time/energy to do sth，可知第一空填to change；第二空than是比较连词，比较的双方必须是平行的事物，因此代词it与动名词throwing things away相比，故填throwing。