What pool can't you swim in ?

  A pool is a water tank .It can also refer to a commom
 supply of something that can be used by a number of
 people. In short, when people drive together in the same
 car to save money, it's called a car pool.

 Why did the racing driver drive off the edge of the cliff ?











 Brake is a device for slowing or stopping a moving vehicle.

 And air brakes are the brakes on racing car. So he wanted

 to test his air brakes.

 Why has a fork and mouth,but can't eat ?















 A fork is the pointed tool you use to eat something.

 But a fork is also the place where a river or a road

 splits and goes in two different directions. the mouth

 of a river is the place where the river enters the ocean.