[求助]XDF补充材料 语法部分section3-25

25. To speak habitually of the “truly needy” is gradually instilling the notion that many of those who are just called “needy” actually have adequate resources; such a conclusion is unwarranted.

(A) To speak habitually of the “truly needy” is gradually instilling the notion

(B) To speak habitually of the “truly needy” is instilling the notion gradually

(C) To speak habitually of the “truly needy” is gradually to instill the notion

(D) Speaking habitually of the “truly needy” is to instill the gradual notion

(E) Speaking habitually of the “truly needy” is instilling the gradual notion

看不懂意思，也不知道为何选c?

To do is to do 结构， 固定搭配

doing is doing 是错误的，没有此结构。