Asking for, Giving, and Refusing Items

Can I borrow your pen for a moment?

Sure, here you go!

Could you please give me that book on your desk?

Sorry, I still need to finish reading it.

Would you mind lending your eraser for a while?

Can I use your calculator? I forgot mine at home.

Could I borrow your notebook for a few minutes? I missed class yesterday.

Sure, here it is. You can borrow it for as long as you need.

Do you have a spare piece of paper I can borrow?

Sorry, I don't. Maybe you can ask another friend.