One day,there is a crow, the crow is very thirsty and hot.He is looking for water.He sees a bottle with some water.He happily flies down,but he can't drink some water.Beause the bottle neck is very long."What can I do".He looks around and sees some pebbles, then he has a good idea. He drops the pebbles into the bottle one by one.The crow drinks the water happily.