When's your older brother's birthday?
My older brother's birthday is ../ It's ...... / His birthday is ....
When's your father's birthday?
My father's birthday is ../ It's ...... / His birthday is ....
When's your grandmother's birthday?
My grandmother's birthday is ../ It's ...... / Her birthday is ....
When's your mother's birthday?
My mother's birthday is ../ It's ...... / Her birthday is ....
When's your older sister's birthday?
My older sister's birthday is ../ It's ...... / Her birthday is ....
When's your younger sister's birthday?
My younger sister's birthday is ../ It's ...... / Her birthday is ....
When's Mark's birthday?
Mark's birthday is ..../It's ..../His birthday is ....
When's your grandfather's birthday?
My grandfather's birthday is ../ It's ...... / His birthday is ....
When's your younger brother's birthday?
My younger brother's birthday is ../ It's ...... / His birthday is ....
When's your teacher's birthday?
My teacher's birthday is ../ It's ...... / Her/His birthday is ....
When's your friend's birthday?
My friend's birthday is ../ It's ...... / Her/His birthday is ....
When's your birthday?
My birthday is ../ It's ......