My sister is ... (young) than me.
younger
Turtles are ... (slow) than rabbits.
slower
This drum is ... (loud) than that drum.
louder
The library is ... (quiet) than the playground.
quieter
My grandpa is ... (old) than my dad.
older
The giraffe is ... (tall) than the zebra.
taller
A cat is ... (small) than the lion.
smaller
Cheetahs are ... (fast) than lions.
faster