单选一道(nothing can stop.)
问题描述：
单选一道(nothing can stop.)
Nothing can stop a promising student ____ his mind to give up his studies.
a changing
b to change
选什么?为什么?
答
b
任何事情都无法改变一个已经许诺的学生去放弃他的学习.
to change
表示 目的,用 to