ПЛЗ Переделаете эти предложение в Pasive Voice
1. They watched everything around them
2. The students had prepared for this trip
3. A group of students left their school in Millbrook
4.The students raised money for a Peruvian zoo

спс

1. Everything around was watched by them. 2. This trip had been prepared by students. 3. The school in Millbrook was left by a group of its students. 4. Money for a Peruvian zoo was raised the students.