He plays piano every day to become the champion of his country. A. theB. aC. /D. an

问题补充：

He plays piano every day to become the champion of his country.

A. the

B. a

C. /

D. an

答案：

(答案→)A. the

B. a

C. /

D. an

解析：play后跟乐器通常加定冠词the，piano是钢琴的意思，故选A。