1.
-Could you check our work, please?
-Yes, of course.
2.
-Could you video The Big Match this evening, please?
-Yes, of course / I'm sorry, I'm afraid I can't.
3.
-Can you please lend me your CD player, please?
-Yes, of course / I'm sorry, I'm afraid I need it now.
4.
-Can we use the school computer after school, please?
-Yes, of course / I'm sorry, I'm afraid they can be used only durring the classes.