Translation:These are personal things.
"these things are personal" wasn't accepted, should it be?
The task was to write in Hebrew, not to translate it
shouldn't "Those things are private" be accepted?
"Those thing" is הדברים האלה or even הדברים ההם, so "Those things are private" is הדברים האלה (הם) אישיים/פרטים.