Lily practises the piano very hard.A. playB. playsC. playingD. played

问题补充：

Lily practises the piano very hard.

A. play

B. plays

C. playing

D. played

答案：

A. play

B. plays

(答案→)C. playing

D. played

解析：句意:莉莉练习弹钢琴非常努力.动名词作宾语表示抽象动作,结合语境可知选C.