My mother is my father's wife. My father is my mother's husband. My mother and my father are my parent's. Mr Smith has got two children: a son and a daughter. My mother's sister is my aunt. My father's brother is my uncle. His brother has got two sons. They are my father's nephews. My father has got a sister, too. His sister has got one child, a daughter. So, my father has got a niece, too.
Фуух, написала!
Ну, что же, удачи тебе!