John, it's 7:30. I wonder how much later they are going to be?
Oh, you know Terry and Susan. They never arrive on time.
Yes, but half an hour late! My dinner will be ruined.
Oh, maybe they got stuck in traffic. You know what the traffic is like at this time of day.
Yes, but they said they were taking the subway so they wouldn't get caught in traffic.
Well, they shouldn't be late then. Why don't you give them a call and see if they've left. Maybe they forgot about the invitation.