Great-grandparents

We are living on average today thirty four years longer than our great-grandparents did.

Only two of my great-grandparents lived long enough for me to meet them.

All their great-grandparents were dead before Tom and Mary were born.

Many people don't know the names of all their great-grandparents.

Many people don't know all their great-grandparents' names.

Do you know the names of all eight of your great-grandparents?

All of my great-grandparents died before I was born.

My great-grandparents spoke French.

Tom's great-grandparents come from Africa.

Their diabetes goes back to their great-grandparents!