A.I'm afraid so B.No, I'm sorry not C.I'm afraid not D.It's my pleasure
A.No, I already have plans. B.I'd love to, but I'm busy tonight C.No, I really don't like being with you D.I'm ill, so I shouldn't go out.
A.OK. Let's go. B.You are welcome C.But I have nothing else to do. D.Not bad.