Вставьте предлоги, которые необходимы: (on; for; of; to; upon; with):
1. The chapter begins __________ a review __________ how reporters and public relations people are mutually dependent __________ each other __________ accomplishing their respective goals.
2. It also mentions __________ areas __________ friction that often contribute __________ an adversarial atmosphere.
3. The reporter cannot depend __________ legwork alone to satisfy his paper’s insatiable demand __________ news.