4 Read the rule and the examples. Then find three more examples in the dialogue. RULES
We use can, could and may to ask permission
or make a request. We use can and may, but
not could, to give permission.
"Can I buy a new phone, Dad?' 'No, you can't.
"Could I try this dress on?' 'Of course you can.
May I pay by credit card?' 'Yes, you may.'