Chinese English Grammars???????

[Maxwel]

1.---It's really kind of you.
---____________.
A. With pleasure B. It's my pleasure C. It doesn't matter D. That's right
2. ---May I ask you a question, Miss Li?
---____________.
A. Yes, please B. Yes, it is C. Yes, you may D. No, you can't
3. I don't think there's _________ in the room.
A. somebody B. anybody c. nobody D. everybody
4.The box was __________ here just now.Where is it now?
A. laid B. lay C. lied D. lying
(I wonder the answers and why)
Thanks ahead!!!!

[Tdol]

Why don't you have a go first?