

It's my duty to protect my country.
[ˈɪts ˈmaɪ ˈduti tə prəˈtɛkt ˈmaɪ ˈkəntri.]
Who is on duty tonight at the gate?
[ˈhu ˈɪz ˈɔn ˈduti təˈnaɪt ət ðə ˈɡeɪt?]
Soldiers have many duties every day.
[ˈsoʊldʒərz həv ˈmɛni ˈdutiz ˈɛvri ˈdeɪ.]
"duty" is in the lesson "Military" (Level 31), along with 13 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.