1 An interesting story will be read to them by him.
They will be read an interesting story by him.
2 She was promised a trip to Moscow by her mother.
A trip was promised to Moscow by her mother.
3 A lot of letters will be sent to Misha by them.
4 Bread is always bought to her by us.
5 These trainers were sold very cheaply by them.
6 This idea is always insisted on by them.