1. - It has been reported that the President is ill.
- The President has been reported to be ill.
2. - It is known that the statement was untrue.
- The statement is known to have been untrue.
3. - It is believed that the climate is changing.
- The climate is believed to be changing.
4. - It is known that he has been in prison.
- He is known to have been in prison.
5. - It is said that the new prices are too high.
- The new prices are said to be too high.