I put, The bottom inside of the container is dirty. I think ot should be accepted. I would have put The bottom of the inside... But I wasnt given enough words to make that happen.
Was there no "my answer should have been accepted" option on the report flag? Some of the exercise types don't give you that option, but it would have been perfect in this case. Anyway, I made the addition to the options.
I tend to use that option when I'm pretty sure. In this case, I was prepared for a discussion if someone disagreed.