Find the odd one out:
1. a. cough b. weak c. headache d. sore throat
2. a. sunburn b. toothache c. earache d. unhealthy
3. a. sick b. temperature c. tired d. weak
4. a. flu b. stomachache c. cold d. fat
5. a. sleep b. happy c. live d. smile
6. a. feel b. healthy c. well d. tired
7. a. fat b. big c. matter d. small
8. a. fever b. dentist c. nurse d. doctor