There is a bug on this question. The answer is already chosen by default, and the only things i can choose are wrong words. But unless i select a wrong word, "check" is not highlighted. There is no way to finish this exercise.
This is very annoying when you have to repeat the same "x-hundred thousand" template.
It's not like Danish or French where you have weird numbering.
So am I :(
Oh, no! Correct answer is upthere