The professor has 11-year-old boy who has gift for dancing. A. a; a B. an; the C. an; a D

问题补充：

The professor has 11-year-old boy who has gift for dancing.

A. a; a

B. an; the

C. an; a

D. the; 不填

答案：

A. a; a

B. an; the

(答案→)C. an; a

D. the; 不填

解析：表示泛指“一个十一岁的男孩”，且eleven的首字母发音是元音，故第一个空填不定冠词an；第二个空have a gift for是固定用法，意思是对……有天赋，故用不定冠词a。