YOU SAID:
i should do math right now
INTO JAPANESE
私は今数学を行う必要があります
BACK INTO ENGLISH
I have to do math now
INTO JAPANESE
私は今数学をしなければならない
BACK INTO ENGLISH
I have to do math now.
INTO JAPANESE
私は今数学をしなければならない。
BACK INTO ENGLISH
I have to do math now.
You've done this before, haven't you.