Are these sentences OK? Where were you during the earthquake? Where were you when the earthquake was happening? You don't understand because you're not married. You don't understand because you're single. You don't understand because you're not a mother. You don't understand because you don't have a child / have children. My mom took care of everything when we were growing up. There are some things that need to be repaired. You'd better come by today. (a mechanic)