Complete the sentences using the correct form of the  adjectives in brackets .
1.Jill’s a (infantile) person than my brother.
2.Kate was the (practical) of the family.
3.Greg felt (good) yesterday than the day before.
4.This cake is the (bad) I’ve ever tasted.
5.Jack was the (tall) of the two.
6.Jack is the (sensitive) of the three brothers.
7.If you need any (far) information, please contact our head office. 
8.The sinking of Titanic is one of (famous) shipwreck stories of all time.
9.Please, send the books back without (far) delay.
10.The deposits of oil in Russia are  the (rich) in the world.
11. Could you come a bit (early) tomorrow?
12.I like this song (well) than the previous one.
13.Which of these two performances did you enjoy (much)?

1. Jill’s a more infantile person than my brother.
Explanation: The comparative form of the adjective "infantile" is "more infantile" because we are comparing Jill to the speaker's brother.

2. Kate was the most practical of the family.
Explanation: The superlative form of the adjective "practical" is "most practical" because we are comparing Kate to the rest of her family.

3. Greg felt better yesterday than the day before.
Explanation: The comparative form of the adjective "good" is "better" because we are comparing Greg's feelings on two different days.

4. This cake is the worst I’ve ever tasted.
Explanation: The superlative form of the adjective "bad" is "worst" because we are comparing this cake to all the other cakes the speaker has tasted.

5. Jack was the taller of the two.
Explanation: The comparative form of the adjective "tall" is "taller" because we are comparing Jack to someone else.

6. Jack is the most sensitive of the three brothers.
Explanation: The superlative form of the adjective "sensitive" is "most sensitive" because we are comparing Jack to his two brothers.

7. If you need any further information, please contact our head office.
Explanation: The comparative form of the adjective "far" is "further" because it is used to indicate distance or extent.

8. The sinking of Titanic is one of the most famous shipwreck stories of all time.
Explanation: The superlative form of the adjective "famous" is "most famous" because we are comparing the sinking of the Titanic to all other shipwreck stories.

9. Please, send the books back without any further delay.
Explanation: The comparative form of the adjective "far" is "further" because it is used to indicate distance or extent.

10. The deposits of oil in Russia are the richest in the world.
Explanation: The superlative form of the adjective "rich" is "richest" because we are comparing the deposits of oil in Russia to all other deposits in the world.

11. Could you come a bit earlier tomorrow?
Explanation: The comparative form of the adjective "early" is "earlier" because we are comparing the time of arrival on two different days.

12. I like this song better than the previous one.
Explanation: The comparative form of the adjective "well" in the context of liking something is "better" because we are comparing two songs.

13. Which of these two performances did you enjoy more?
Explanation: The comparative form of the adjective "much" in the context of enjoyment is "more" because we are comparing the level of enjoyment between the two performances.