A、  B、  C、  C

Would you like some coffee while you wait?
(A)Yes, two copies please.
(B)Yes, if it’s not too much trouble.
(C)No, I only got here five minutes ago.

Do you have a spare key to the storage room?
(A)He usually keeps it there.
(B)There is plenty of room now.
(C)Go and ask the caretaker.