I hate to be an old grouch (although that is what I am) but it seems that the hints in the Korean course are beyond useless. If the Korean word for "leg" is the same as "bridge" and the Korean word for "road" is the same as "distance" then PLEASE show this in the hints. There are far more examples of this than I can give now.
Also, why are there no pronunciation exercises, spelling exercises, etc.? It also seems that many of the times when I type in the English answers, they are counting them as incorrect, and giving an answer that means the same thing. I hate to sound angry, but it is just so frustrating.