#Person1#: Has Alan shown up yet?
#Person2#: Nope. I guess something might have come up.
#Person1#: I wonder what happened.
#Person2#: I don't know. I hope it's nothing serious.
#Person1#: Last week his sister was admitted to the hospital.
#Person2#: Oh? What happened?
#Person1#: His sister had a car accident last week.
#Person2#: Is she fine now?
#Person1#: She is still in a coma.
#Person2#: Oh, poor Alan! His sister is the only one he has left since his parents died last year.
Alan's sister had a car accident last week. #Person1# and #Person2# are worried about Alan.
worry about friends