Can / could /may
This exercise is based on the language presented on page 116 of How English Works



 
Match the items on the right with the items on the left.
 
Can I get you a cup of coffee?
Could you lend me your newspaper?
May I come in?
Could I use your phone?
Do you think I could borrow a pen?
Can I have some paper?
Can you change a pound?
May I see your driving licence please?
Can I ask you a question?
Can I help you, madam?