Choose the correct word

1. She needs a ... job because she has got a little child.
2. ... is a science which studies stars and planets.
3. Some pupils break the rules and don’t wear a ... .
4. We had been waiting for forty minutes before a ... took our order.
5. He had to leave his job because his ... was low.
6. One of the most important thing for everybody is ... .
7. There were a lot of pictures of a famous ... . 8. His favourite subject is ... .
9. This building was designed by a famous ... .
10. If you are ill you should visit a ... .