YOU SAID:

I should be studying right now but who cares?

INTO JAPANESE

私は今勉強するべきですが、誰が気にしますか？

BACK INTO ENGLISH

I should study now, who cares?

INTO JAPANESE

私は今勉強しなければなりません、誰が気にしますか？

BACK INTO ENGLISH

I must study now, who cares?

INTO JAPANESE

私は今勉強しなければなりません、誰が気にしますか？

BACK INTO ENGLISH

I must study now, who cares?