Do these sentences make sense? Am I using the word “circumstance” correctly? If not, please correct them
He said it was a circumstance that he saw a ghost.
He said it was a circumstance when he saw a ghost.
I believe the circumstances that the earth travels around the sun.
I know it was a circumstance that the earth travels round the sun.
The wood floated on water in true circumstances.
She know it’s a certain circumstance that it was cloudy the day before yesterday.
She said there were circumstances that the man was innocent.