Finish the following sentence with the best choice: How can I make a cool bed for my small dog?

Choices:
- Use an old suitcase, insert a soft pillow and play toy,when the dog's inside seal the case.
- Use an old suitcase, insert a soft pillow and play toy, let the dog sleep there.

Answer:
Use an old suitcase, insert a soft pillow and play toy, let the dog sleep there.