Choose the correct prepositions

1. He just wouldn't listen
   [of|on|in|to|from] my explanation.
2. I get a lot of satisfaction
   [of|on|in|to|from] watching my students do well in exams.
3. How could she concentrate
   [of|on|in|to|from] her studies with so much noise going on?
4. I enjoy travelling
   [of|on|in|to|from] style so I always book seats in first class.
5. It is important to understand the value
   [of|on|in|to|from] adding exercise to your daily routine.
6. They plan to retire
   [of|on|in|to|from] work and go sailing around the world.
7. The whole class is participating
   [of|on|in|to|from] the charity fun run.
8. My best friend is someone I can rely
   [of|on|in|to|from]. She's always been there for me.
9. I have been learning how to swim
   [of|on|in|to|from] an early age.