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（C）

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

答案似乎很明显，用to.. to..并列即可。但我当时一直怀疑 is gradually to ... 感觉很奇怪,

而且 to do ... is to do...这种结构似乎不常见, 能解释一下 么?

guadually 的位置也奇怪.

这个结构是正确的

to do is to do

doing is doing

但是to do is doing与doing is to do就是错误的。

guadually是修饰is的，位置也正确呀。