Solution to this cryptogram puzzle

[thecatisnotdead]

I'm a beginner to cryptograms and I'm not able to solve this puzzle. The letters already mentioned are from hints.
Help me !

[maplegoose]

"The dullest olympic sport is curling, whatever 'curling' means."
I started by guessing "the"/"whatever"-->"means". From there, you can kinda figure out most of the remaining words.