Ответ:

My dad is five years older than my mom.

My sister and brother are younger than me.

My brother is older than my sister.

My uncle and my dad are the same age.

My sister is older than my cousin.

My father is twenty years older than me.

My brother is younger than my mom, but older than my sister.

My grandmother is younger than my grandfather.

My grandfather is thirty years older than my father.

и т. д.