"Are you spending the class on writing letters?"
Translation:Bruger du timen på at skrive breve?
What can this sentence possibly mean? Unless it means using this class?
Duolingo seems not to realize that the English word "letters" could mean something that you stick in the mail or letters of the alphabet. As a teacher I know that there are times when younger students practice writing the letters of the alphabet. Duolingo expects me to read their mind and know what meaning of they word they have chosen to use.
I'm neither an English nor a Danish native, but to my ears this sentence sounds good, maybe because in German this would be a perfect sentence. Maybe "lesson" would be better than "class"?
Are you spending the lesson on writing letters?
Verbringst du die Stunde damit, Briefe zu schreiben?
Ah, yes, "Verbringst du die Stunde damit, Briefe zu schreiben" makes sense. I would translate that as: "Are you spending the lesson time writing letters?" You can "spend time", you can "spend money", but you can't spend classes. But Duolingo doesn't seem to care if the sentence makes no sense at all.