you need to give all you have and try your best. A. Being a winnerB. To buy a winnerC.

问题补充：

, you need to give all you have and try your best.

A. Being a winner

B. To buy a winner

C. Be a winner

D. Having been a winner

答案：

A. Being a winner

(答案→)B. To buy a winner

C. Be a winner

D. Having been a winner

解析：考查不定式作目的状语。根据后句你需要付出你的一切和努力，前面应该是后句的目的，意思“为了去当冠军，”buy 意思是“obtain at a sacrifice”符合句意，选B。