Переведите следующие предложения из активного залога в пассивный.
1. The policeman arrested the suspect in the street.
2. They founded Scotland Yard in 1842.
3. The police fulfils many functions.
4. He will interrogate the offender tomorrow.
5. They collect all the data.
6. Scotland Yard keeps files of all criminals.
7. They train police officers every year.
8. The police protects citizens.