Mr. Reed made up his mind to devote all he had to _______ some s

Mr. Reed made up his mind to devote all he had to _______ some schools for poor children.
A、set up
B、setting up
C、have set up
D、having set up
【正确答案】：B
【题目解析】：devote．．．to．．．是固定搭配，意为“将……献给”，其中to为介词，后接名词、代词或动名词。此处he had为定语从句，修饰先行词all。