Mr.Reed made up his mind to devoted all he had to____some schools for poor children.

题目

Mr.Reed made up his mind to devoted all he had to____some schools for poor children.
A.set up B.setting up C.have set up D.having set up
答案应该选B.为什么?请说明原因,

答案

还是搭配呀...devote oneself to doing sth