Ответ:

1. shorter

2. the curlist

3. darker

4. the best

5. more beautiful

6. the youngest

7. older

8. the most intelligent

9. more pretty

Answer;

1 shorter

2 the curliest

3 darker

4 the best

5 more beautiful

6 the youngest

7 older

8 the most intelligent

9 prettier

Explanation;

exceptions: good-better-the best; bad-worse-the worst; far-further-the furthest

+er / +est for short words

more / the most for longer words