单选题 Mr. Reed made up his mind to devote all he had to______ some schools for poor children.

【正确答案】 B
【答案解析】[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。