You could say something like this. 오늘 춤 연습 있었는데 참 재밌었어. 오늘 댄스 연습 했는데 참 재미있었어. * 오늘 : today, 춤 / 댄스 : dance, 연습 : practice, 참 : very much * 재미있었어 = 재밌었어 (shorter form): it was fun.