It was a hot day.A bird was very thirsty.He saw some water in a bottle.But he couldn’t drink the water,because the bottle’s neck was very long.“How can I drink the water?” he thought and thought,and then he found many stone beside the bottle.He had an idea at once.He put some stones into the bottle till the water was full and got to the neck of the bottle.He could drink the water at last.He felt very happy.