Fill in the gaps with must or may. then act out the exchanges. a: what are you doing this evening? b: i am not sure i go to the cinema. a: are you busy? b: yes. i finish this project tonight. a: can i go to john's party, dad? b: you can but you be home early. a: are you coming with us to the beach? b: i come but i don't know yet. a: we have a barbecue next week. b: oh, that's great! call me when you know for sure/