sister/ old/ fifteen/ my/ is/ years/./10/15Choose the letter A, B, C or D to complete the sentences with given words sister/ old/ fifteen/ my/ is/ years/./Sister is my fifteen years old.Fifteen years old my sister is.Fifteen years old is my sister. My sister is fifteen years old.Giải thíchĐáp án: D Giải thích: Tuổi+ years old: Bao nhiêu tuổi Dịch: Chị gái tôi 15 tuổi.