Justin Bieber müzik kariyerine başladığında on dört yaşındaydı.
- When Justin Bieber started his music career, he was fourteen years old.
Kaç yaşındasın? On altı yaşındayım.
- How old are you? I'm 16 years old.
... novel when you were 11 years old. >>Taylor Swift: I was 14. ...
... when i was eight years old ...