- he is running the Marathon this year.
-  He rushed down the hall to receive his guests.
-  let's race and see who gets there first.
-  some biologists doubt that there are important genetic differences between races of human beings.
-  The cars raced down the street.
-  The psychologist raced the rats through a long maze.
-  the race for the presidency.
-  the race is to the swift.
-  We are racing to find a cure for AIDS.