Exercise 2: Choose the word whose underlined part is pronounced differently from that of the others
21. A. away B. bird C. common D. weather
22. A. heard B. breathe C. hurt D. earth
23. A. birth B. answer C. exercise D. colour
24. A. unique B. usual C. surfing D. human
25. A. of B. leaf C. life D. knife
26. A. cough B. thought C. enough C. laugh
27. A. charity B. hi-tech C. headache D. chemical
28. A. graffiti B. garden C. general D. google
29. A. calorie B. carve C. collage D. centre
30. A. certain B. compare C. encourage D. community