YOU SAID:

This class should have ended a while ago, but this teacher is so slow

INTO JAPANESE

このクラスは少し前に終了するはずでしたが、この先生はとても遅いです

BACK INTO ENGLISH

This class was supposed to end a while ago, but this teacher is very slow

INTO JAPANESE

このクラスはしばらく前に終了することになっていたが、この先生は非常に遅い

BACK INTO ENGLISH

This class was supposed to end a while ago, but this teacher is very slow