Ответ:
1. It is the largest shop in town
2. Monday is the worst day of the week.
3. Ben was the noisiest person in his family
4. Sam is the most popular in the class.
5. Which is the most difficult subject at school?
6. Jim is the best player in the football team.
7. Elephants are the heaviest animals
8. Let's pick the biggest apple of the tree
9. Mary is the thinnest girl in the class.
10. That is the most comfortable sofa in our house.