A：Why,Tom? It's five to six already and you are still writing here.
B：So what ?Are we going anywhere?
A：Yes , have you forgotten?We have arranged to go to Mary's to watch some videos tonight.
B：Oh , I'm sorry I forgot all about it.Well, can I take a rain check?
A：What's the matter with you ? You are the one that persuaded all of us to go there.
B：I'm terribly sorry,Rose.But I have to finish this paper by tomorrow or professor Martin will kill me.