5. I don’t know how they manage to _____ ￡55 a week.
    6. Unfortunately, the drug is of _____ value in treating cancer.
    7. George was very _____, because he lived _____ after his wife died.
    8. Ecology is the study of how _____ things relate to their environment.
    Key:
    1. lack 2. major 3. limit 4. landed
    5. live on 6. limited 7. lonely; alone 8. living