A or an?
... green board
- a
- an
... blue chair
- a
- an
... orange juice
- a
- an
... airport
- a
- an
a pink Walkman
- a
- an
... ice cream
- a
- an
... black car
- a
- an
... overhead projector
- a
- an
... red apple
- a
- an
... apple
- a
- an
... yellow mountain bike
- a
- an
... orange Game Boy
- a
- an
... exercise book
- a
- an
... sandwich
- a
- an
... big hot dog
- a
- an
... skateboard
- a
- an
... blue exercise book
- a
- an
... toffee
- a
- an
... interesting book
- a
- an
... word game
- a
- an