в passive voice пожалуйста

1) Mary studies English
2) The mechanic repaired the car yeaterday
3) Many students attended the music festival
4) Local authorites organize fireworks on the festival
5) Several bands will play Carribean music

English is studied by MaryThe car was repaired by the mechanic last dayThe music festival were attended by many studentsOn the festival are organized fireworks by local authoritesCarribean music would played by several bands

English i studied by Mary.The car was repaired by mechanic yesterday.The music festival was attended by many students.Fireworkson the festival were organized by local authorites.Carribean music will be played by several bands.