I often hear him ______(play) the piano in the room.

I often hear him _____ ( sing ) in the next room. 12.I often hear him _______ in the room. 英语完形填空 we often hear dick (play)the piano in the next room I often hear him ( ) in the room I often heard him ( ) in th 把I often hear him play the piano all day 改为被动语态 i often hear a boy （） the piano in the next room ( )I often listened to him ______ the piano.A.to play B.play I often hear him paly the piano at home. I often hear him sing the song in the room.变为被动语态 I often hear him _____ ( sing ) in the next room.为什么答案上要求加in I often play the piano. We often play the piano in the room.划线部分提问（in the room) 急、