Explanation:
Finde Fehler und korrigie
Es shnet und es ist kalt. T
sie eine Schneburg. Sie bl
Sammstag und sie
Mundane is an adjective and it means boring or dull. Like, "just a mundane day at work". It means that it was a boring day at work.
Hope this helps ;)
Well, that seems to be a run-on sentence in addition to grammar errors.