She is very good at playing piano and now she is teaching piano at a music school.A. the

问题补充：

She is very good at playing piano and now she is teaching piano at a music school.

A. the….the

B. /…the

C. the…./

D. /…./

答案：

A. the….the

B. /…the

(答案→)C. the…./

D. /…./

解析：演奏乐器时，乐器的名称前要用定冠词。