They make use of such forms of energy like wind and sunlight to help cut the cost.改错
问题描述：
They make use of such forms of energy like wind and sunlight to help cut the cost.
改错
答
they use such forms of energy like wind and (or) sunlight to help cut the cost
答
They make use of such forms of energy like wind and sunlight to help to cut the cost
少了一个 "to"
to help to (do something)