Ответ:
A new book was written by the famous writer.This house was built by them.This work will have finished by 3 p.m. tomorrow,честно с этим не уверена.A new dress was bought by sister.The desk is put in the centre of the room.His mobile phone was repaired by his brother.The new flat will moved by them.The picturesque was hang by she.A letter has written by she.She is told by they.He was sent for a doctor by his parents.Her book was laughed by them.
Не знаю,может половина неправильно,но я старалась)