YOU SAID:
There is unfinished business that needs to be taken care of.
INTO JAPANESE
世話をする必要がある未完成のビジネスがあります。
BACK INTO ENGLISH
I have an unfinished business that needs to be taken care of.
INTO JAPANESE
私は世話をする必要がある未完成のビジネスを持っています。
BACK INTO ENGLISH
I have an unfinished business that needs to be taken care of.
You've done this before, haven't you.