I. Choose the words whose underlined part is pronounced differently from that of the others in each group
21. A. when B. which C. whole D. what
22. A. environment B. comment C. development D. improvement
23. A. great B. fate C. seat D. hate
24. A. sugar B. since C. sight D. song
25. A. change B. chocolate C. chip D. schedule
26. A. ordered B. developed C. touched D. escaped
27. A. washes B. handles C. courses D. teaches
28. A. happiness B. homework C. honour D. hungry
29. A. dead B. leader C. feast D. heating
30. A. thorn B. thong C. there D. theatre