Исправьте оплошности в предложениях 1. My uncle is mothers sister.

Исправьте оплошности в предложениях
1. My uncle is mothers sister.
2. My niece is ten. I am twelve. He is elder than me.
3. My grandparents are my mother, my father, my aunt and uncle.
4. Her nephew is my sister.
5. The granny is the youngest in the family.