Suggestion: Allow "report a problem" from sentence discussion
I might be forgetting how to do it, or maybe a method is not offered.
I goofed during a test, and after getting something "wrong", I clicked continue. It took a second to sink in, but in reality, I was right, and the question was wrong. After the test, I went and searched discussion sentences, and sure enough, my answer was correct. But from discussion, there's no way to "report a problem" with the sentence. Instead, I can only comment, and there is reason to believe that this is not an effective means for submitting fixes.
So, the suggestion is to link up the sentence discussion and the test question, so feedback can be given from either place.