My sister likes playing volleyball while my brother likes playing piano.A. the; theB. a ;

问题补充：

My sister likes playing volleyball while my brother likes playing piano.

A. the; the

B. a ; a

C. the; /

D. / ; the

答案：

A. the; the

B. a ; a

C. the; /

(答案→)D. / ; the

解析：此题考查的是冠词的用法，球类前面不加冠词，乐器前需加上定冠词the。因此答案选D