Complete each sentence with a correct preposition or adverb . 1. My brother, who used to be very lazy and rebellious, has recently transformed himself ______ an excellent, hard-working student. 2. As a student, it's important to have friends you can rely______. 3. It’s considered normal for young people to rebel ______their parents’ ideas for a certain period of time. 4. The money collected ______ people who attended the talk was used to pay the organizers' expenses. 5. The passage about the University of Bologna is based ______ great deal of research. 6. Students in the sixties found many things to protest______ 7. In America, huge numbers of students protested ______the Vietnam War. 8. The head of the university was eventually forced to resign______ his position.