Answer:
A small, quiet boy with a sad face was sitting next to a thin dog that shared this same expression by a dirty, old house that had seen better days.
Step-by-step explanation:
This is a sentence that expresses the same idea as the original one but employs more vivid details. The use of rich, vivid details is one of the easiest and most effective ways to make your story more interesting. By using more details, you allow the reader to create a more complex image of the events you are describing. This is likely to increase his interest in your story.