Fill in the bank with one suitable preposition.
1. My mother is very keen____________ growing roses.
2. John is extremely fond ____________ music.
3. We thanked them____________ all their help.
4. Are you interested ____________ a harvest festival ?
5. Wine is made _____________ grapes.
6. How many members participated ____________ the rice-cooking contest?
7. The children are really looking forward __________ Tet holiday.
8. Santa Claus is based ______________ the description of Saint Nicholas.
9. Two team members take part __________ the water-fetching contests.
10. They have to separate the rice __________the husk and cook the rice.