This is a letter from your sister. =
Ovo je pismo od tvoje sestre.
I received a letter last month. =
Dobio/la sam pismo prošlog meseca.
She wrote a letter to her ex-boyfriend. =
Napisala je pismo bivšem momku.
Did you open the letter? =
Da li si otvorio/la pismo?
They have many letters in that box. =
Oni imaju mnogo pisama u toj kutiji.
Open the letter and read it aloud. =
Otvori pismo i pročitaj ga naglas.
I sent a letter to my friend. =
Poslao/la sam pismo svom prijatelju.
These are the letters. =
Ovo su pisma.