Mary is often heard ________ playing piano in the next room in the evening.A．pra

题型：不详难度：来源：

Mary is often heard ________ playing piano in the next room in the evening.

A．practise

B．to practise

C．practising

D．practiced

答案

B

解析

本题考查动词用法。hear sb do sth听说某人做某事，其被动语态中要加上to，故选B。句意：常听说Mary晚上在隔壁房间弹钢琴。