Choose the words whose underlined part is pronounced differently from that of the others in each group

I. Choose the words whose underlined part is pronounced differently from that of the others in each group.
1. A. with B. beathe C.southern D. throughout
2. A. aching B. approach C. chorus D. orchestra
3. A. news B. things C. students D. brains
4. A. vegetables B. smoothies C. lifestyles D. lunches
5. A. rested B. asked C. helped D. placed
6. A. respect B. depend C. recommend D. Relative
7. A. telephone B. post office C. directory D. moment
8. A. chicken B. coach C. chemistry D. change
9. A. shortage B. message C. passage D. massage
10. A. invitation B. collection C. nation D. question
11. A. houses B. passes C. nurses D. classes
12. A. persuit B. suitable C. recruit D. guilty
13. A. fast B. stay C. take D. lazy
14. A. hand B. hurt C. hour D. health
15. A. laugh B. plough C. cough D. enough
16. A. sleep B. soda C. sick D. sugar
17. A. headache B. meat C. eat D. weak
18. A. enough B. should C. trouble D. money
19. A. sounded B. presented C. visited D. checked