1: Has made the last payment on
2: Roller coaster feature
4: Flippered fish fancier
10: Highway loop-the-loop
12: ___ fiber (flax, hemp, ramie, or jute)
14: Investigate, with 'into'
30: Craft entered gingerly
31: Responds correctly on 'Jeopardy!'
47: Book with 150 chapters
54: Castle in a board game
56: Machine with a shuttle