A: Lunch together tomorrow
B: ______

A．I wonder what's happened to Jerry. He hasn't been around for at least weeks.
B: ______A. Yes, two weeks have passed before you know where you are.
B．Jerry is quite introvert. He doesn't like to let others know much about him.
C．Do you know the reason for his absence
D．He took a leave to see his mother in Europ

A．Well, no, but my friend is in the washroom now.
B．No. I'm afraid you must go and find another seat.
C．Of course, take it easy.
D．Yes, please sit down.