Verified answer

(6)

1. Available - unavailable

2. Limited - unlimited

3. High - low

4. Natural - artificial

5. Large - small

6. Difficult - easy

7. Common - distinctive

8. Precise - inexact

9. Advantage - disadvantage

10. Profit - loss

(7)

1. way in

2. regard as

3. of living

4. with a large

5. due to

6. a number of

7. for individuals

8. paid to

9. faced by

10. tend to