Lucy practicedthe piano last weekend.A. playB. playsC. playingD. played

问题补充：

Lucy practicedthe piano last weekend.

A. play

B. plays

C. playing

D. played

答案：

A. play

B. plays

(答案→)C. playing

D. played

解析：句意：上周末露西联系弹钢琴了。动名词做宾语表示抽象的反复发生的动作，行为动词一般不能用作宾语，结合语境可知选C。