1-The quests sang us a song.
A song was sung by the quests
2-I can recommend you a good bookA good book can be recommended me by him.
3-Someone wrote me a funny letter.A funny letter was written me by someone
4-Tom is reading the text to me.The text is being read to me by tom
5-My boss has mentioned this idea to me.This idea has been mentioned to me by my boss