I. Choose the words whose underlined part is pronounced differently from that of the others in each group.

1. A meat                       B. heat                  C. health               D. seat

2. A. house                     B. overcrowded    C. country             D. town

3. A. slum                      B. luck                  C. cutting              D. sugar

4. A. smooth                  B. toothache         C. footprint           D. wood

5. A him                         B. hunter              C. honor               D. ham

6. A. washed                  B. needed             C. danced             D. matched 

7. A. obey                      B. key                   C. grey                  D. survey

8. A. ways                      B. days                 C. books               D. stays

9. A. seat                        B. great                 C. seaside              D. beach

10. A. heritage                B. cottage              C. luggage             D. cage

11.     A. hour                B. household        C. rehearse            D. horrible

12.     A. hygiene           B. energetic           C. altogether         D. surgery

13.     A. oceanic            B. decide              C. socialize           D. delicious

14.     A. measure           B. breakfast           C. ten                    D. spread

15.     A. stomachache    B. biology             C. worried            D. comfortable

16.     A. perform           B. end                   C. festival             D. elephant

17.     A. cake                B. celebrate           C. racing               D. candle

18.     A. desert              B. held                  C. prefer               D. celebrate

19. A. those                    B. they                  C. than                  D. Thanksgiving

20.     A. designs            B. sails.                 C. pedals               D. pollutes

21.     A. cranberry         B. lantern              C. gather               D. apricot

22.     A. abundant         B. travelling          C. character           D. biogas

23.     A. diverse            B. drive                C. invention          D. crime

24.     A. washed            B. needed             C. danced             D. matched

25.     A. obey                B. key                   C. grey                  D. survey

26.     A. density            B. countryside       C. reason              D. list

27.     A. sugar               B. slum                 C. cutting              D. luck

28.     A. fact                  B. place                C. malnutrition     D. traffic

29.     A. spacious          B. delicious           C. social                D. decision

30.     A. decrease          B. healthcare         C. sea                    D. disease