Before the invention of the toothbrush, people used a twig with a frayed end, also known as a “chew stick,” to brush their teeth.  Today’s  toothbrushes designed with a solid plastic handle with either a fixed or flexible brush at one end. Toothpaste is typically added to a toothbrush to assist in maintaining good oral hygiene.  Both toothpaste and toothbrushes come in a vast assortment of colors, shapes, and sizes.  Utilizing appealing, or attractive, toothbrushes can make tooth brushing enjoyable and lead your child in attaining perfect oral health.

What is the main idea?

She sobbed for hours trying to think of a way out of having to tell her father she wrecked her new car. After stewing over it for quite some time, she called her father on his cell phone. "Thank you," he said.

Jim was stacking boxes at work. There was a certain height he had to reach. He stretched his body, but could not reach to place the final box at the top. Bill happened to see Jim struggling and came to his rescue, since he was a foot taller.

What is the relationship between the mood of a piece of writing, and the reader of that piece?