It's ___ ostrich.
an
a
It's ___ apple.
an
a
It's ___ window.
an
a
It's ___ bus.
an
a
It's ___ fish.
a
an
It's ___ cat.
a
an
It's ___ elephant.
a
an
It's ___ door.
an
a
It's ___ orange.
an
a
It's ___ guitar.
an
a
It's ___ cake.
a
an
It's ___ ruler.
an
a
It's ___ table.
a
an
It's ___bookcase.
a
an
It's ___ folder.
an
a
It's ___ pencil.
a
an
It's ___ orange.
an
a
It's ___ sofa.
a
an
It's ___ insect.
an
a
It's ___ bag.
a
an
It's ___ cow.
a
an