. Choose the words whose underlined part is pronounced differently from that of the others in each group
1. A. columnist B. frustrated C. study D. adulthood
2. A. helpline B. September C. embarrassed D. depressed
3. A. tense B. skill C. decision D. house-keeping
4. A. resemble B. adolescence C. independence D. destruction
5. A. delighted B. depressed C. embarrassed D. relative
6. A. drumhead B. illustration C. earplug D. drugstore
7. A. strip B. visual C. artistic D. remind
8. A. thread B. treat C. pleasure D. dead line
9. A. embroider B. preserve C. benefit D. effect
10. A. emotion B. shoulder C. cognitive D. cold
11. A. explore B. exotic C. destroy D. mentor
12. A. drumhead B. illustration C. earplug D. drugstore
13. A. strip B. mine C. line D. remind
14. A. thread B. treat C. pleasure D. deadline
15. A. embroider B. preserve C. benefit D. effect
16. A. treasure B. pleasure C. ensure D. measure
17. A. daughter B. author C. laundry D. sausage
18. A. dials B. calls C. says D. plays
19. A. education B. graduate C. individual D. confident
20. A. embarrassed B. awareness C. abandoned D. captain
21. A. concentration B. question C. attraction D. emotion
22. A. exist B. exchange C. extreme D. expect
23. A. recognize B. opinion C. adolescence D. conflict
24. A. urban B. craft C. organize D. Canada
25. A. artisan B. handicraft C. machine D. heritage
26. A. skill B. house-keeping C. tense D. decision
27. A. advice B. decision C. delighted D. helpline
28. A. study B. adulthood C. columnist D. frustrated
29. A. concentrate B. self-aware C. stressed D. tense
30. A. embarrassed B. depressed C. helpline D. empathise