1.My mother is very keen...............growing roses
2.John is extremely fond..............music
3.Are they interested................a harvest festival
4.How many members participated............the rice-cooking contest
5.Santa Claus is based................the description of Saint Nicholas
6.That's very kind..............you to help me...............this math problem
1, on
2, of
3, in
4, in
5, on
6, of/ with