В английском языке существуют так называемые "сильные глаголы" и "слабые".
К сильным можно отнести глагол to be have got, has got, модальные глаголы: must, may, can, would и некоторые другие. Эти глаголы образуют отрицания и вопросы без вс глаголов.
Все остальные глаголы - "слабые" - у них нет "сил", чтобы образовать отрицания и вопросы. Поэтому в Present Simple - настоящем простом времени мы в отрицании после подлежащего ставим does not (если подлежащее стоит в 3 лице ед. ч.) или do not (во всех остальных случаях).
И в вопросе перед подлежащим ставим does (если подлежащее стоит в 3 лице ед. ч.) или do (во всех остальных случаях).
1_They say that the fire is still burning.
It is said that the fire is still burning.
The fire is said to be still burning.
2_They report that the fire started in Dnipropetrovsk Region.
It is reported that the fire started in Dnipropetrovsk Region.
The fire is reported to start in Dnipropetrovsk Region.
3_They believe that the flood in Chernivtsi region has destroyed a lot of houses.
It is believed that a lot of houses have been destroyed by the flood in Chernivtsi region
A lot of houses are believed to have been destroyed by the flood in Chernivtsi region.
A_They report that the fauna of the Gulf of Mexico is in danger.
It is reported that he fauna of the Gulf of Mexico is in danger
The fauna of the Gulf of Mexico is reported to be in danger.
5_They believe that robots will stop the Gulf of Mexico oil spill.
It is believed the Gulf of Mexico oil spill will be stopped by the robots.
The oil spill is believed to be stopped by the robots.
6_They expect that "British Petrolium" will find a solution to the disaster
It is expected that a solution to the disaster will be found by "British Petrolium".
A solution to the disaster is expected to be found by "British Petrolium"