In fall the days get (shorter/longer).
shorter.
The bats stay cooler/warmer) when they are together in their roost.
cooler
Bats are ________ ________ people think. They are very intelligent. (smart)
smarter than
In Fall the weather gets (cooler or warmer).
cooler
The bat on the bottom is _______ _______ the bat on top.
larger than, bigger than
The bat's ears are (longer than/shorter than) his wings.
longer than
The bats fly ________ than the houses.
higher
The pumpkin in the middle is (taller than/shorter than) the other pumpkins.
taller than