1) to choose (6) a hobby
2) to divide into (1) categories
3) to collect (2) records
4) to attend (3) concerts
5) to attract (7) hobbyists
6) to be engaged in (4) the activity
7) to make (5) models
8) to play (8) a game
9) to present (9) a collection
2.Are there | Yes, there are.
3.Are there | Yes, there are.
4.Is there | No there isn't
5.Are there | No, there aren't
6.Are there | No, there aren't