将下列句子改成被动语态1.I heard Jane play the piano in her roomJane ()(

将下列句子改成被动语态
1.I heard Jane play the piano in her room
Jane ()()()()() the piano in her room.
2.How long may I keep the book
How long () the book ()()?
3.He makes the girl stay at home
The girl ()()()() at home
4.we should speak to old men politely
Old men ()()()() politely
thanks~