Using the wrong language to answer
A while back when entering an english text during a listening excersie Duo told me: "That doesn't look like french". I found this feature really helpful. It doesn't seem to work all the time though. I just answered in English in the French-German course and instead of telling I was using the wrong language I was marked wrong. Has this feature been removed or does it only work in listening. It would be really helpful to have it through all the courses. The difference between e.g. English and German should be enough to notice that I chose the wrong language to answer.
BTW, my answer was right, just the wrong language....