Odd one out

1.
A. headache
2.
A. exercise
XExercise 1. Odd one out A, B, C or D.
C. backache
C. problem
B. earache
B. reduce
3.
A. vegetable
B. computer
4.
A. important
B. sunburn
C. junk food
C. allergy
D. regular
D. limit
D. sweet
D. cough
5.
A. spots
B. sore throat
C. toothache
D. medicine
6.
A. flu
B. cold
C. hot
D. fever
7.
A. strong
B. vegetarian
C. healthy
D. weak
8.
A. vitamin
B. cousin
C. children
adult