Answer:
1. Breaking up with someone you love hurts like the devil.
2. Jason and his sister always fight like cats and dogs.
3. Jennie's smile is as bright as the sun. It makes me happy just by looking at it.
NOTE: There seems to be a misspelling in number 4.
4. My father was as fierce as a lion. Nothing would scare him.
5. The thief ran away, quick as a cat. The police weren't able to find him anywhere.
Explanation:
The analogies given in the question serve as a comparison between two different things. They give emphasis to a feeling or idea by establishing a parameter. If someone says something "hurts like the devil", for instance, we know it hurts a lot. The analogy makes the feeling more powerful, more vivid. In writing, this type of comparison helps convey ideas in a more colorful way.
