Corrected sentence:
Hares have legs of different sizes. Their long back legs help them jump, and their short front legs help them turn, stop, or drum.
Why this is better:
- We use their both times so it matches hares (they).
- Putting a comma before and makes the sentence clearer to read.
- Drum means they tap their front legs on the ground to make a sound, a bit like tapping a table.
Nice work noticing how hares use their legs!