Requests and offers - Can, could, would

1. A: Can I get you Would you like( Can I get you, Would you like ) something to drink?
B: Yes, please. A coffee would be could be( would be, could be ) nice.
2. A: Would you like to eat Do you want to eat( Would you like to eat, Do you want to eat ) lunch now?
B: No thanks, I’m all right. I'm fine.( I’m all right., I'm fine. ) I ate on the plane.
3. A: Could I just try Can I try( Could I just try, Can I try ) one of those muffins over there? They look very tasty.
B: Yes, of course. Help yourself. I'll bring you one.( Help yourself., I'll bring you one. )
4. A: Could I May I( Could I, May I ) check my email from your computer? I'm expecting an important message.
B: I’m afraid I think( I’m afraid, I think ) the internet isn't working at the moment.