What's the ............... (exciting) sporting event you've ever watched?
most exciting
What's the ............... (frightening) film you've ever seen?
most frightening
What's the ............... (expensive) thing you've ever bought?
most expensive
Who's the ............... (generous) person you've ever met?
most generous
What's the ................ (relaxing) holiday you've ever had?
most relaxing
What's ................ (difficult) subject you've ever studied?
most difficult
What's the ............... (dangerous) sport you've ever done?
most dangerous
What's the ............ (beautiful) city you've ever been to?
most beautiful