her ambition of being a professional singer, she has been training very hard since an early age.
A. Realizing
B. To realize
C. Having realized
D. To have realized
网友回答
A. Realizing
(答案→)B. To realize
C. Having realized
D. To have realized
解析:句意:--为了实现他成为专业歌手的理想,她从小时候就一直努力的训练。这里是目的状语,非谓语中只有不定式可以做目的状语,所以选B。