Where were the small girl and her mother having a walk?

A small girl and his mother were having a walk in the country when it suddenly began to rain very hard. They did not have their umbrellas with them, and there was nowhere to hide form the rain, so they were soon very wet, and the small girl did not feel very happy.
   For a long time while they were walking home through the rain, the girl was thinking. Then at last she turned to her mother and said to her, "Why does it rain, Mother? It isn’t very nice, is it?"   “No, it isn’t very nice, but it’s useful," answered her mother. "It rains to make the fruit and the vegetables grow for us, and to make the grass grow for the cows and sheep. "
   The girl thought about this for a few seconds, and then she said, "Then, why does it rain on the road too, Mother?"