II. Choose the word (A, B, C or D) whose main stress is placed differently from the others in each group.

3. A. economic /ˌiːkəˈnɒmɪk/              B. activity /ækˈtɪvɪti/

    C. disappointed /dɪsəˈpɔɪntɪd/          D. scientific /saɪənˈtɪfɪk/

4. A. detective / dɪˈtektɪv /                   B. romantic / rəʊˈmæntɪk /     

    C. national / ˈnæʃənl /                      D. adventure / ədˈvenʧə /