___ a lonely and rugged life, far from home and family.

Helium is ___ all gases to liquefy and is impossible to solidify at normal air pressure.

Every year Canadian ___ about 75 percent of their exports to the United States.

An innovator, ballerina Augusta Maywood was ___ a traveling company.

When water freezes in the cracks of rocks, ___ expands, causing the rocks to break apart.

With x – ray microscopes scientists can see through live insects ___ even through solid pieces of metal.

With x – ray microscopes scientists can see through live insects ___ even through solid pieces of metal.

___ are not leached out of soil, reclamation procedures are needed to restore the land’s productivity.

___ social crusade aroused Elizabeth Williams’enthusiasm more than the expansion of educational facilities for immigrants to the United States.

___ as 2500 B.C., the Egyptians used mirrors made of highly polished metal.