He knows he has .................... when he is asked to appear on TV.

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

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

Farmers look forward to .................... every summer.

Within an area of only 100 miles, Death Valley sinks to 282 feet below sea level while Mount Whitney,.................. to a height of 14,494 feet.

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

Chosen as the nation's capital at the end of the American Civil War,.................. a city of over a million people.

Birds all over the world.................. in distances up to thousands of miles.