.................. human beings have relatively constant body temperature.

In the preparation of fibrous material for production uses, stiff woody fibers from plants.................. fibers from animal sources.

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

Partnership is an association of two or more individuals who .................... together to develop a business.

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

.................. that increasing numbers of compact-disc players will be bought by consumers in the years to come.

Cellulose, which.................. for making paper, can be found in all plants

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