keen

Definition:
1. Wanting to do something or wanting something to happen very much.
2. Very interested, eager, or wanting (to do) something very much.

1. The nationalists are very keen to conserve their customs and language.
2. Keen to preserve his artistic integrity, he refused several lucrative Hollywood offers.
3. The teenagers in the canteen are keen to see the queen sitting between the green screens in the greenhouse.
4. The company negotiates very keen prices with their suppliers.
5. He had retained a keen interest in the progress of the work.
6. He's a very keen student and works very hard.
7. She's a very keen reader, she devours one book after another.
8. Tom's very keen on Anna.
9. If someone is keen, they are intelligent.
10. Dogs have a keen sense of smell.
11. Only the keenest of students could have solved this math problem.
12. Are you very keen about going with them?
13. John was very keen to help.