I. Choose the words whose underlined part is pronounced differently from that of the others in each group 1. A. collection B. tradition C. exhibition D. question 2. A. version B. pleasure C. usual D. design 3. A. closure B. sure C. pleasure D. leisure 4. A. ocean B. concert C. musician D. official 5. A. so B. expensive C. saxophone D. music 6. A. treasure B. closure C. exposure D. ensure 7. A. happy B. hard C. similarity D. talent 8. A. chorus B. brochure C. machine D. chef 9. A. treasure B. vision C. discussion D. decision 10. A. exhibition B. action C. question D. tradition 11. A. collect B. clean C. city D. cracker 12. A. pottery B. melody C. modal D. profit 13. A. near B. clear C. dear D. learn 14. A. knocked B. needed C. founded D. wanted 15. A. spring B. swimming C. think D. realize 16. A. country B. hungry C. fly D. every 17. A. why B. who C. when D. what 18. A. finished B. reported C. landed D. succeeded 19. A. celebrate B. lazy C. vacation D. mechanic 20. A. conclusion B. ensure C. rush D. mission 21. A. student B. study C. dust D. must 22. A. father B. date C. hard D. last 23. A. chapter B. rich C. cheese D. chemist 24. A. watches B. boxes C. buses D. tables 25. A. pleasure B. sound C. same D. best 26. A. foot B. pool C. moon D. food 27. A. birth B. their C. myth D. fifth 28. A. trays B. says C. bays D. days 29. A. companion B. company C. comparison D. compartment 30. A. naked B. wicked C. beloved D. confused 31. A. plumber B. doubt C. debt D. herbage 32. A. clothes B. gone C. drove D. ghost 33. A. hear B. clear C. swear D. ear 34. A. heat B. great C. beat D. teach 35. A. nearest B. head C. bread D. health 36. A. sign B. mistake C. triangle D. drive 37. A. noon B. tool C. blood D. spoon 38. A. plays B. looks C. wants D. helps 39. A. decided B. played C. listened D. enjoyed 40. A. feed B. heat C. meat D. pleasure 41. A. dear B. fear C. hear D. heart 42. A. stupid B. studio C. study D. student 43. A. brother B. thick C. they D. that 44. A machine B. parachute C. champagne D. cheer 45. A. doctor B. hospital C. pollution D. tomorrow 46. A. cough B. laugh C. enough D. high 47. A. collect B. clean C. city D. cracker 48. A. pottery B. melody C. modal D. profit 49. A. near B. clear C. dear D. learn 50. A. knocked B. needed C. founded D. wanted