Here are the sentences filled in with the correct degree of adjectives:
- I find that the postal service has become better than before. (good)
- Birbal was the wisest minister in Akbar's court. (wise)
- Stones are heavier than stones. Rocks are heavier than stones. Boulders are the heaviest. (heavy)
There's a minor correction in the third sentence: it states "Stones are heavier than stones," which seems to be a mistake. It should perhaps compare stones to rocks or boulders instead.
If it’s corrected as:
"Stones are heavier than pebbles. Rocks are heavier than stones. Boulders are the heaviest."
Let me know if you need more help!
