求英语高手解决五个改写被动语态的句子!

1.The patient will be operated immediately by the doctors.
2.A bridge was built between the two islands last year by them.
3.What a bad smell.The room must be aired by you.
4.This problem is about to be discussed by us.
5.My best friend Kate might be called on this afternoon by me.
再问： 请问能确定全是对的么？ 首先先真心感谢你了！
再答： 是的，确定 不客气。欢迎随意询问，可以加百度HI帐号
再问： 我实在是太感谢了！！ 谢谢你！可以加你的QQ么？
再答： 可以噢 384944044 记得采纳噢(*^__^*)
再问： 已经加了 希望可以加 采纳给你吧！！
再答： 好的，已经加了