The children are talking about their families. Choose the correct word

The children are talking about their families. Choose the correct word (a, b or c) to fill in the gaps in the sentences. There is an example (0) at the beginning.
nbsp;I am proud of my grandfather. He is (0) a_ doctor and works for the Doctors
Without Borders1 organisation. He goes to dangerous areas to (1) _ _____________
people. I know that my grandfather helped many people in (2)_________. He got
an order for his (3)______________. He is the first (4)____________ at his hospital.
My grandpa was a skilful doctor and he (5)_______________a new medicine which
helps to treat serious (6) _ nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;___.
nbsp;nbsp;My brother nbsp;wants nbsp;to be nbsp;(7) ____ astronaut. nbsp;nbsp;His nbsp;ambition nbsp;is nbsp;to go to
(8) __________. And my brother is a pupil (9)__ nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;__ambitions make him study
better and better. He studies well and he is (10)_____leader of his class.