Simon likes playing football but Sandy likes playing piano.A. a aB. the theC. the /D.

问题补充：

Simon likes playing football but Sandy likes playing piano.

A. a, a

B. the, the

C. the, /

D. /, the

答案：

A. a, a

B. the, the

C. the, /

(答案→)D. /, the

解析：句意：Simon喜欢踢足球而Sandy喜欢弹钢琴。球类运动的前面不用冠词，而乐器的前面须加定冠词，故选D。