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Most people believe it's very important to 1. **keep fit** in order to 2. **get well**, but even the fittest person can sometimes 3. **suffer** no matter how hard they 4. **refer** their health. If you do become ill, of course you want to 5. **get well** as soon as possible. With most minor illnesses, such as a cold or flu, it's usually possible to 6. **look after** yourself by taking lots of rest and drinking plenty of liquid. However, if you 7. **fall** from something more serious, you will have to go to your doctor. He will 8. **examine** you and, if possible, 9. **operate** you with medicine which you can 10. **take** from your local chemist. If you have an unusual illness, your doctor may 11. **refer** you to a specialist or a hospital, who may decide to 12. **operate** on you if your illness is serious. You will then have to 13. **recuperate**, and this can take a long time.