Ответ:
1. Mustn’t
2. Mustn’t
3. Must
4. Must
5. Must
6. Mustn’t
7. Must
8. Mustn’t
9. Mustn’t
10. Must
short- shorter- the shortest
tall- taller - the tallest
young- younger - the youngest
beautiful - more beautiful- the most beautiful
good- better- the best
fast- faster- the fastest
expensive- more expensive - the most expensive
bad- worse - the worst
difficult - more difficult- the most difficult
little- less- the least
Надеюсь поможет!