1 A letter was sent by the headmaster.
2 The Christmas party will be organized by our children next Friday.
3 The dogs are trained by Mary in the garden.
4 All the windows have been cleaned by Mrs. Simpson today.
5 The suitcase has been packed by Frank.
6 The bills were paid by Bill.
7 She will be examined by the doctor tomorrow.
8 The door is painted by my Granny every year.