下列句子排队排乱了，你给它们排一排，组成完整的句子吧!
1. younger than is My father grandfather my
2. My is mother than older me
3. two grandmothers and I two grandfathers have
4. many there family How people in are your
1. My father is younger than my grandfather.
2. My mother is older than me.
3. I have two grandmothers and two grandfathers.
4. How many people are there in your family?