he always took some reading matter with him on the plane.
he had been thinking about the subject for several years.
he kept drifting off the topic.
is anything the matter?.
It does not matter much.
it is a matter for the police.
it is none of your affair.
physicists study both the nature of matter and the forces which govern it.
several matters to attend to.
they were friends and it was no matter who won the games.
things are going well.