As Ukrainian-speaking, I will say that the Ukrainian phrase is unnatural. It should be like this "Куди ти ПІДЕШ завтра?"
Omg if you don't want us to put walk as an answer on the matching don't make it an option!
Could this be translated also as "Where will you be going tomorrow" ?
Yes, it can.
"Where are you going tomorrow" should be accepted. Check out English grammar rules for use of the present continuous tense.
Agree. Unfortunately this course was created by non-native English speakers.