YOU SAID:
Sorry, have to do my homework
INTO JAPANESE
申し訳ありませんが、私の宿題をしなければなりません
BACK INTO ENGLISH
Sorry, it must be my homework
INTO JAPANESE
申し訳ありませんが、それは私の宿題である必要があります
BACK INTO ENGLISH
Sorry, it must be my homework
You've done this before, haven't you.