Each of the words in bold is in the wrong sentence. Write the correct word.

1. It can be difficult to (exercise) at the top of a very high mountain.

2. I know I should (recover) more often, but it's not easy to find the time.

3. It will take you a few weeks to completely (suffer) from your illness.

4. Both my grandparents (cough) from arthritis.

5. If you have to (breathe), please put your hand in front of your mouth!