关于英语被动语态 将下面三个句子改为被动语态一般疑问句①我已把1000首歌下到电脑上了②你能把电视关上吗③你不可以在课堂

1) Have 1000 songs been downloaded to the computer?
2) Can the TV set be turned off?
3) Can words be spoken in class?