Choose the most suitable preposition

1. They held a concert to raise money
   [for|over|of|in]
   charity.
2. People should have the right to freedom
   [for|over|of|in]
   expression.
3. He wandered
   [for|over|of|in]
   to the stage to see his favourite band up close.
4. The city is famous
   [for|over|of|in]
   its diverse cultural events all year round.
5. If
   [for|over|of|in]
   doubt, call the charity organisers.