How old

 How old   ( বয়স কত )

How old is our earth ?

আমাদের পৃথিবীর বয়স কত ?

How old is our sun ?

How old is our moon ?

How old is your sister ?

তোমার বোনের বয়স কত ?

How old is your brother ?

তোমার ভাইয়ের বয়স কত ?

How old is your mother ?

How old is your father?

How old is your grandfather ?

How old is your grandmother  ?

How old is your uncle ?

How old is your aunt  ?

How old are you ?

How old is he ?

How old is  she ?

How old are they ?