01. Complete the sentences with a or an. a) My aunt is __ teacher. b) Selena Gomez is __ American singer. c) Campinas is __ city. d) Brad Pitty is __ actor. e) South Korea is __ country.

a) My aunt is a teacher.<br />b) Selena Gomez is an American singer.<br />c) Campinas is a city.<br />d) Brad Pitt is an actor.<br />e) South Korea is a country.<br /><br />In these sentences, we use 'a' before words that begin with a consonant sound, and 'an' before words that begin with a vowel sound.