The course was one on Greek syntax, which was irritating on the one hand but profitable on the other. The challenge is figuring out what words go with each other as you sort out all the clauses and sub-clauses and sub-sub-clauses in a sentence that runs on for a paragraph. The word order of Greek is much looser than English, but the extra cases together with three forms of gender and greater distinction of singular/plural, together with more distinctive verb conjugations provide a lot of clues as to the ordering of things.
The third semester of Greek disappeared from the online course schedule, which has me a bit annoyed. But not too much. I will take a semester break.