she often sing song 变被动语态

she often sing song 变被动语态 we often sing the song如何变被动语态 I often hear her sing the song.(改为被动语态) I often hear him sing the same song被动语态 把can she sing the song?改为被动语态 i often hear her sing a song变被动句 We often hear her sing this song.(改被动语态） I often hear him sing the song in the room.变为被动语态 Do these student often sing the English song?(被动语态） Do these students often sing the English song?(变成被动语态） The girls often sing this song in our class 变为被动语态 Do these student often sing the English song (被动语态）