Grammar: indefinite articles 'a' and 'an' (answers)

1. I'm looking for an orange-coloured sweater.
2. Are you an American citizen?
3. They are sending a UN inspector.
4. We're having a press conference with an ABC reporter, a CBS reporter, an NBC reporter and a FOX reporter.
5. Is there a holiday in February?
6. Was the stegosaurus a carnivore, a herbivore or an omnivore?
7. All of the workers in this factory belong to a union.
8. The word 'mnemonic' starts with an 'm'.
9. It was a useful piece of advice.
10. If you have an hour or two, you should watch this movie.