We could certainly mark correct answers (we're planning to) but it's cases where there are mistakes that are much harder to mark. We are working on it though!

Glad you enjoyed the exercises. Dictations are incredibly effective ways to improve language skills. They force you to listen using all of your attention and your brain learns much faster when it's in this state of focus.

Hi Don - we're working on a version that will mark these for you, or at least suggest a mark which you can override if you feel it's unfair. There are an almost infinite number of ways that freeform text can differ from a 'model' correct answer, so this isn't as easy as it may seem.