English grade 5 CBE, write a 5 sentence each with antonyms and synonyms?

Antonyms:
1. The antonym of "hot" is "cold."
2. The antonym of "happy" is "sad."
3. The antonym of "big" is "small."

Synonyms:
1. "Happy" and "joyful" are synonyms.
2. "Fast" and "quick" are synonyms.
3. "Big" and "large" are synonyms.

Synonyms:
- The dog and puppy are both friendly animals.

Antonyms:
- The hot and cold temperatures were unpleasant.