Form the necessary derivatives from the words on the right

Form the necessary derivatives from the words on the right and complete the sentences.

1. The exercise was very long. I thought it was end
2. I thought the s were better than the text. Illustrate
3. The of her voice calmed the old lady. soft
4. John is a very driver. I dont like to travel with care
him in the car.
5. I think that the new project is rather difficult. personal
6. What is the . Of this area? populate
7. People should do more for the of the environment. protect