I. Which underlined part is pronounced differently from the rest?
1. A. photograph B. laugh C. safe D. save
2. A. ferry B. vast C. leaf D. enough
3. A. soft B. enough C. plough D. paragraph
4. A. activity B. laughter C. wolf D. cough
5. A. knife B. of C. leaf D. life
6. A. although B. enough C. paragraph D. cough
7. A. junk B. sun C. put D. adult
8. A. headache B. architect C. chemical D. children
9. A. aerobics B. calories C. cycling D. doctor