-Yeah. She can't do better, _ _ _ _ _ _?
A.will she?
It's d.
Context:-Have you ever heard of Wang Meng? It was this woman athlete who won the first gold medal for China in Turin.
-I've heard of it. She is perfect/too good/the best.
Key words: the negative form can't be better than the comparative degree to express the highest meaning.
I could have done better before.
At that time, it was impossible to do better, judge or analyze the past situation.
Antonym: In the past form, she.