a or an?
an apple
a or an?
an arm
a or an?
an orange
a or an?
an ostrich
a or an?
a nose
a or an?
an eye
a or an?
an owl
a or an?
an onion
a or an?
a cow
a or an?
a zebra
a or an?
a crocodile
a or an?
a banana
a or an?
a monkey
a or an?
a pear