a/an orange
an orange
a/an bike
a bike
a/an egg
an egg
a/an ostrich
an ostrich
a/an elephant
an elephant
a/an igloo
an igloo
a/an octopus
an octopus
a/an cherry
a cherry
a/an tiger
a tiger
a/an apple
an apple
a/ an banana
a banana
a/an umbrella
an umbrella