Например так:
1. I was offered a cup of tea.
2. Examinations are taken by students at the end of each term.
3. The birthday cake was baked by my mother.
4. America was discovered by Columbus in 1492.
5. I was asked by children to read a story.
6. This story was written by George Simenon.
7. We were given a form to fill in by boss.
8. I was taught to ride a bicycle by my father.
9. He was told by doctor to lie in bed for three days.
10. You will be served your breakfast by the waiter in five minutes.
11. English is spoken by people in many countries.
12. You shall be given a cup of coffee if you want.
13. The shop is closed at 5.