Choose the correct preposition.
1 Lucy always eats everything on/in her plate.
2 He cares of/for the elderly.
3 A dolphin came close at/to us while we swam.
4 A young man jumped in/on board the bus.
5 I'm free on/in Sunday mornings.
6 Darren couldn't get off/through on the
telephone.
7 She was by/on a plane to Rome.
8 We're interested to/in helping to collect money for the shelter.