1. - It is said that the monument is over 100 years old.
- The monument is said to be over 100 years old.
2. - It is expected that the president will resign.
-  The president is expected to be resigned.
3.- It is reported that seven people had been injured in the fire.
- Seven people are reported to have been injured in the fire.
4. Many people believe that the climate is changing.
- It is believed that the climate is to change.
- The climate is believed to be changed.
5. Everyone knows that he has been in prison.
- It is known that he has been in prison. 
- Не is known to be in prison.
6. The Police said that Peter had stolen several cars.
- It is said that Peter had stolen several cars.
- Peter is said to have stolen several cars