YOU SAID:
I'm definitely not supposed to be doing school work right now...
INTO JAPANESE
私は間違いなく今学校の仕事をしているはずはありません.
BACK INTO ENGLISH
I definitely shouldn't be doing school work now.
INTO JAPANESE
私は間違いなく今学校の仕事をするべきではありません。
BACK INTO ENGLISH
I definitely shouldn't be doing school work now.
That didn't even make that much sense in English.