Choose the word whose main stressed syllable is placed differently from that of the others in each group

II. Choose the word whose main stressed syllable is placed differently from that of the others in each group.

4. A. between                       B. under                               C. fireworks                         D. palace

5. A. anthem                        B. expert                              C. fragile                              D. perform

6. A. affect                           B. culture                             C. direct                               D. invest