1. The lesson is explained by the teacher.
2. The food is being cooked in the kitchen by Mrs Green.
3. The patients were examined by the doctor.
4. That noise was made by these boys.
5. English is spoken all over the world.
6. The money was given back to him by him last Sunday.
7. These exercises can't by done quickly by me.
8. The report had been finished by her by noon.
9. We had been disappointed very much by the movie.
10. The bill has to be paid by them before the first of the month.
11. You will be asked several questions.
12. He is being held for further quesioning by the police.
13. I was promised a bycicle by my parents two days ago.
14. The box has been locked and can't be opened by me.
15. All the dinner had been eaten by them before they finished the conversation.
16. Were you made to laugh a lot by the clown last night?
17. You are wanted to do this work by me now.
18. That silly thing shouldn't be done by him.
19. The president is called every morning.