It is known that this treatment has helped thousands of patients. / This treatment is known to have helped thousands of patients.

It is believed that the vaccine will be effective against the new variant. / The vaccine is believed to be effective against the new variant.

It was reported that there had been severe flooding in the area. / There was reported to have been severe flooding in the area.

It was reported that there was a significant delay ... / There was reported to have been a significant delay ...

It was reported that there was an explosion in the factory. / There was reported to have been an explosion in the factory.

It was said that the company had gone bankrupt. / The company was said to have gone bankrupt.

The thief is believed to have escaped through the back door last night.

It is suggested that the company is planning a major expansion. / The company is suggested to be planning a major expansion.

It was claimed that the actor had been involved in a scandal. / The actor was claimed to have been involved in a scandal.

It is said that the Earth is getting warmer every year. / The Earth is said to be getting warmer every year.

It is claimed that the politician made a controversial statement during the debate. / The politician is claimed to have made a controversial statement ...

It is expected that there will be a rise in fuel prices next month. / There is expected to be a rise in fuel prices next month.

It was believed that the ancient city was buried under the desert. / The ancient city was believed to be buried under the desert.