请教一道语法

未知数325208

1， (Throughout) the 1930's, United states government (patronage) tha arts (was concentrated) in the section of the Works Progress Administration (known as) Federal One.

我选的 是was concentrated----〉were concentrated,但是答案是patronage错了，为什么啊？？？？

gre3333

--> patronizing   名词不能带宾语，动名词可以。

动名词做主语，谓语用单数是对的。