A common noun are words like house. Year
Answer:
Dee must have closed the door.
Answer:
You could do some sort of color scheme involving the rainbow or different shades of the same color. You could do a plant theme, a planet theme, a heart theme... anything you want! Just try not to add too much clutter so you are still able to see your information. :)
The answer to your question is B I AM PRETTY SURE