Mark letter A, B, C or D to indicate the word whose underlined part is pronounced differently

Mark letter A, B, C or D to indicate the word whose underlined part is pronounced differently from that of the others in each group.

1.        A. drumhead                        B. treat                               C. deal                               D. weave

2.        A. entertained                      B. behaved                        C. passed                           D. changed

Mark letter A, B, C, or D to indicate the word whose main stress position is placed differently from that of the others in each group.

3.        A. suburban                          B. elevate                           C. collective                       D. initial

4.        A. attraction                         B. preference                     C. advantage                     D. volcanic