Find the word which has a different sound in the part underlined.
1. A. allergy B. calorie C. coordinate D. triathlon
2. A. compound B. concentrate C. monopoly D. melody
3. A. essential B. attention C. vegetarian D. depression
4. A. sick B. swimming C. itchy D. riding
5. A. really B. healthy C. regularly D. identify
13. A. bottle B. purpose C. collect D. second
14. A. heard B. pearl C. heart D. earth
15. A. sofa B. away C. banana D. occasion