Speaking (in) a language
The Korean course seems to make a distinction between speaking in a language and speaking a language. As a native English speaker, I have never made a distinction and can't think of an example where the distinction is important.
https://www.duolingo.com/skill/ko/regular-verbs (see Speaking a Language)
Can we please accept both translations into the English?
Thanks for feedback!
Make sure to use the report function when you encounter it again in the course. This makes it easier and more likely for the course developers to pick it up and act on it.