Mr Jones decided 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
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B解析不少同学看到“he had to”就迅速选择A。其实，此时had to与set up并不构成搭配，因为he had为定语从句，修饰先行词all，set up应与devote all…to构成搭配(devote…to…中to为介词，后接名词/代词或动名词)，即devote all to setting up。