题目

 (10·安徽D篇) My father was 44 and knew he  wasn’t going to make it to 45. He wrote me a letter and hoped that something in it would help me for the rest of my life.    Since the day I was 12 and first read his letter , some of his words have lived in my heart. One part always stands out . “Right now ,you are pretending to be a time killer. But I know that one day, you will do something great that will set you among the very best.” Knowing that my dad believed in me gave me permission to believe in myself . “You will do something great .” He didn’t know  what would How old ________? (　　)A. are youB. you areC. you