May 21, 2020: It looks like Jirka.1 wrote a comment about this three years ago and this is still not addressed by any contributor. Can someone who has access to this course please send a request in to have this changed? This is the second time in the Ukrainian course that quotation marks have been used in the course's expected answer, and it seems to override anyone's correct answer who is not using them, or doesn't even know to use them in the answer. This is especially confusing in a verbal exercise where we are typing what we hear.
This is my exact answer, marked wrong by the course:
Моя відповідь - ні.
The course expects me to write: Моя відповідь - "ні".
I know Duolingo does its best to maintain a lot of the program, but I think three years is a bit long to have this go on for in the Ukrainian course. I will report this as "My answer should be accepted", and will also send this to Support.
This isn't the only time. Remember this one:
In business there is no "maybe".
That exercise caused a lot of grief for learners too, trying to get through the exercise as complete with their correct answers only to find that it will not allow a correct unless quotation marks are around the word "maybe". A contributor seemed to have a lot of difficulty getting the other answers to be accepted, but it seems these answers encrypted with quotation marks are the issue.