单选题 I remember ______ the piano beautifully when he was a child.
A. playing B. him to play
C. him to have played D. him playing

【正确答案】 D
【答案解析】[解析] 动词搭配题。remember后跟动词不定式表示动作还未发生，跟动名词表示动作已经发生。