1) use / useful / useless
pain / painful / painless
music / musical
noise / noisy
beauty / beautiful
danger / dangerous
politics / political / unpolitical
dirt / dirty
fame / famous
2) 1. dangerous
2. hopeless
3. useful
4. politics
5. beautiful
6. painful
7. dirt
8. noisy
3) (1) musical
(2) useless
(3) success
(4) actors
(5) nervous
(6) painful
(7) hopeless
(8) professional
(9) unknown
