I am (99%) sure what you mean, but next time please specify it ;) But this is almost certainly about the fact that "Ty spacerujesz" and "Wy spacerujecie" have been starred answers. "spacerować" is "to stroll", "to take a walk". The problem is that this sentence is shared with the "English for Polish" course, and they prefer to translate "walk" as "spacerować". However, some of their sentences also use "chodzić" as the default answer, so I believe it shouldn't be a problem if I change the answers here to "Ty chodzisz" and "Wy chodzicie".
The "cho" sound is very difficult to me to understand, i feel like I'm repeating it in the wrong way, any advice?
Maybe this will help by comparing it to any other language you know? https://en.wikipedia.org/wiki/Voiceless_velar_fricative
"ch" and "h" are the same sound. I'd say that "j" in Spanish is the same.
Can you please send a link to a list of present-tense verb endings by subject? I am several weeks in with Duolingo and still can't recognize which endings belong with Ty, Wy, On, Ona, etc.