SAT
Listening to good storybooks sharpen children’s awareness and appreciation for the sounds of spoken language.【 sharpen children’s awareness】划线部分
(A) sharpen children’s awareness
(B) sharpens children’s awareness of
(C) are what sharpens the awareness of children
(D) sharpens the awareness of children
(E) is to sharpen children’s awareness
但是为什么选B