将下一句子改为被动语态（九年级英语）,能改几句就改几句,高手来

各位不要误人子弟
第七句是 He was asked to play the piano last sunday
其余都对了 楼主相信我
1By whom is the book bought?（who is the book bought by?）
2He was seen by us sitting there without doing anything.
3Tom will be rung up by me.
4The strange has been taken to another hospital by someone.
5Was his homework done by him last night?
6The teacher was listened by the students carefully.

1,whom was the book bought?
2,He was seen sitting there without doing anything
3,Tom will be rung by me
4,The stranger has been taken by someone to another hospital
5,Was his homework did last night?
6,The teacher was listened to by the students carefully
最后一句好像少了什么吧？

我认为楼上第七句翻译有误
我补充下
7的翻译为 他上星期天被要求去弹钢琴。
应该这样写
The piano is played by him who is asked last Sunday.
who后面的is可以省略 其他的我和楼上的一样

1.Who was the book brought by?
2.He was seen sitting there without doing anything.
3.Tom will be rung up by me.
4.The stranger has been taken to another hospital by someone.
5.Was his homework done last night?
6.The teacher was listened to carefully by the students.

1By whom is the book bought?
2He was seen by us sitting there without doing anything.
3Tom will be rung up by me.
4The strange has been taken to another hospital by someone.
5Was his h...