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

3. A. many /ˈmeni/                              B. ladder /ˈlædə/

    C. forest /ˈfɒrɪst/                              D. invent /ɪnˈvent/

4. A. ability /əˈbɪlɪti/                            B. acceptable /əkˈseptəbl/       

    C. education /ˌedju(ː)ˈkeɪʃən/          D. hilarious /hɪˈleərɪəs/