............. occasions for congratulations.

Forty-niners ............. to California for gold in 1848.

In order for people to work together effectively, they need ............. each other's needs.

It is good form to use the name of the person ..............

............. the promotion of health and to helping people avoid injury and disease.

People usually can get a sufficient amount of the calcium their bodies ............. from the food they consume.

It is possible ............. may assist some trees in saving water in the winter.

Hollywood, the heart of America's motion picture industry, ............. of Los Angeles a century ago.

Kitchen appliances called blenders became ............. in the 1930s, when Stephen J. Poplawski developed a machine that excelled at making his favorite drink.

Built at the beginning of the century, the Library of Congress houses one of the largest ............. collections of books in the world.