Помогите пределать в пассивный залог
1. I ... to do(to tell)
2. The newspapers ... just ...(to bring)
3.Tickets ... not ...yet (to book)
4. The bottle of milk ... (to open)
5. The birthday presents ... already ... (to buy)
6. Several sport competitions ... in our school (to organize)
7. Who ... this cake ... by? (to make)
8. ... the doctor ... for? (to send)