(UNIFOR -2014) Leia as sentenas abaixo e marque a

(UNIFOR - 2014) Leia as sentenças abaixo e marque a opção correta de acordo com o uso dos artigos definido e indefinido: 

I. Can you play a guitar?
II. I once played the guitar which had only five strings.
III. She started learning the piano at the age of five.
IV. I’ve always had a flute, ever since I was a child.
V. I’m afraid the violin is an instrument I never mastered.