It is important for each person to fulfill their role.

That person is my friend.

I went to see a movie by myself.

Watching a movie alone is enjoyable.

I'm tired of interacting with people, I need some time alone.

I got tired of interacting with people because I was dealing with them all day.

Please hurry up because we don't have time.

I like to spend the weekend with my family.

Your cooperation is needed for this project.

I need you.