Решение:
- Tom's very quiet. He's the quietest boy in the class.
- Mount Everest is very high. It's the highest mountain in the world.
- I think geography is easy. It's the easiest subject in school.
- It's very wet today. It's the wettest day of the year.
- Rachel is very nice. She's the nicest girl I know.
- Fred's exam results are bad. They're the worst results in the school.
- My friend Jake is very funny. He's the funniest boy in the class.
- Neptune is very far away. It's the farthest planet from the sun.
Ответ: 1. quietest, 2. highest, 3. easiest, 4. wettest, 5. nicest, 6. worst, 7. funniest, 8. farthest.