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

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.

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.

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

I'll think about your suggestion while I.................. for you.

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