Mrs. Grayson the much loved teacher of first grade retired last year at age seventy two.

No Change

Mrs. Grayson, the much loved teacher of first-grade, retired last year at
age seventy-two.

Mrs. Grayson, the much-loved teacher of first grade, retired last year at
age seventy-two.

Mrs. Grayson, the much loved teacher of first grade, retired last year at
age seventy two,

Mrs. Grayson, the much loved teacher of first grade, retired last year.

Explanation:

The subject of this sentence is Mrs. Grayson, and the sentence says she retired last year at age seventy two. "The much loved teacher" describes Mrs. Grayson, and should have a comma after (and before it).

new york state wildlife expert richard thomas found that a woodchuck could (and does) chuck around 35 cubic feet of dirt in the course of digging a burrow. thomas reasoned that if a woodchuck could chuck wood, he would chuck an amount equivalent to the weight of the dirt, or 700 pounds.

eggs are a high protein food! dan is most likely to include them in his diet. according to my sources, "whole eggs are among the healthiest and most nutritious foods on the planet. they are loaded with vitamins, minerals, healthy fats, eye-protecting antioxidants and brain nutrients that most people don't get enough of. whole eggs are high in protein, but egg whites are almost pure protein."