the workers that don't get tired 1

Which one is a machine

They all are A machine is something
that people use to help them do working.
There are many in your home and  almost
everything that isn't a machine was made
by a machine. A machine called the alarm 
clock probably awakens your family each morning. In addition, the electric shaver and 
the toothbrush are machine So are the broom and the spoon.