b) By the time the vet arrived, the injured cat was already dead/died.
c) Unfortunately it rained on Nick and Helen's wedding/marriage day.
d) David and Diana have two sons and one daughter/girl.
e) I think we should try to understand the problems of aged/old people.
f) There should be more facilities for youth/young people in this town.
g) More than fifty relatives/parents were invited to Jack's party.
h) It's my anniversary/birthday today. I'm eighteen years old.
