Question

Use the or zero article to fill in the gaps.
(1)...bat is a night animal.During the day,
(2)...bats usually roost in large groups in
(3)...caves,(4)...attics,or(5)...trees,
hanging upside-down.

Answer 1

The bat is a night animal. During the day, bats usually roost in large groups in
 caves, attics, or trees,hanging upside-down.

Answer 2

1. A
2. -
3. -
4. -
5. -