hai(: hier ein paar ideen:
-yes: - what is there to eat - what's his name - where is the party - how much friends come - are there people I know - are his parents at the party, too - do I need a present - is it his birthday - how old will he get
no: - I don't have time - I don't like him - his parents are there, too - his music is horrible - I don't have a present
ich hoffe das konnte dir helfen :)