Question

【题目】In fact, the key to ________ (make) a broom (扫把) stand up on its own lies in finding the balance point.

Answer 1

【答案】making

【解析】

句意：事实上，让一把扫把自己站立起来的关键是找到那个平衡点。

make使成为，做；the key to doing sth.……的关键，to是介词，后面用动名词形式。故答案为making。