YOU SAID:
I had to skip this lesson.
INTO JAPANESE
私はこの授業をスキップしなければなりませんでした。
BACK INTO ENGLISH
I had to skip this class.
INTO JAPANESE
私はこの授業を欠席しなければなりませんでした。
BACK INTO ENGLISH
I had to miss this class.
INTO JAPANESE
私はこの授業を欠席しなければなりませんでした。
BACK INTO ENGLISH
I had to miss this class.
That didn't even make that much sense in English.