Mr Reed made up his mind to devote all he had to some schools for poor children.A. set u

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A. set up
(答案→)B. setting up
C. have set up
D. having set up
解析：devote…to… 的意思是“把……贡献给……”或“致力于……”，其中 to 是介词，不是不定式符号，若后动词要用动名词。句中的 he had 为定语从句，用以修饰 all，注意不将 had to 视为同一个语义结构。