What are the rules for using A, AN and THE? See below and do the exercise:)

FCE USE OF ENGLISH PREPARATION

DEFINITE AND INDEFINITE ARTICLES EXERCISE

by Bob Wilson at autoenglish.org

HOME FCE USE Part 1 FCE USE Part 2 GRAMMAR EXERCISES

An old cat

use AN before a vowel

The old cat

use THE at the second mention

An island in Greece

unspecific

The island of Delos

specific

Articles Exercise
Choose the correct answer below to fill the gap.