Answer: Accept : Yes, you should. You can kill your time with that.
Decline : No, you should not.
5. Why don't we meet at the bookstore tomorrow at 5 p.m.?
Accept : Okay. I'll be there on time.
Decline : I'm sorry i can't. I have an appointment with my mother.
6. Let's all eat together.
Accept : Let's go.
Decline : Sorry i can't. I have to finish my homework first.