Choose the word whose underlined part is pronounced differently. Circle the corresponding letter A,B,C or D

1. Choose the word whose underlined part is pronounced differently. Circle the corresponding letter A,B.C or D:
3. A. because            B. nurse                   C. horse           D. purpose
4. A. throughout      B. although             C. right            D. enough
5. A. justice             B. service                         C. practice     D. advices