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.
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(1) The...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.