疑问！

kevin0216

1.        A firm that specializes in the analysis of handwriting claims from a one-page writing sample that it can assess more than three hundred personality traits, including enthusiasm, imagination, and ambition.

(A) from a one-page writing sample that it can assess

(B) from a one-page writing sample it has the ability of assessing

(C) the ability, from a one-page writing sample, of assessing

(D) to be able, from a one-page writing sample, to assess

(E) being able to assess, from a one-page writing sample

答案是D，为什么Ability of doing 不可以用啊？

wycg

一般都用ba able to do, 不用be ability of doing.