Before the telephone was invented by Alexander Graham Bell in 1876, it was hard for people ........……over long distances.

Duke University in North Carolina has an outstanding collecting documents concerning history

Urban consumers have formed co-operatives to provide themselves with necessities such groceries, Household appliances, and gasoline at a cost.

It is necessary that the director will sign all the copies, not just top one.

Although almost all insects have six legs, a immature insect may not have

Dwelling primarily in the ice Northern Polar seas,  whales are characteristically small, white, agile, and elusive

Everyone who has traveled across the United States by car, train, or bus are surprised to see such a large expanse of territory with such variation among the lifestyles of the people.

It _________Lan who always helps him in his trouble.

In the United States, leading butter-producing states which are Wisconsin, California, and Minnesota.

They agreed with waiting for me if I was late.

Superior to all others woods for shipbuilding, teak is also used for furniture, flooring, and general construction

When scientists discovered how soap works, it became possible to do detergents out of Petroleum.

Petrography concerns primarily with the detailed description and classification of rocks, whereas petrology deals primarily with formation.

That it is believed that most of the earthquakes in the word occur near youngest mountain ranges – the Himalayas, the Andes, and the Sierra Nevada.

Being the biggest expanse of brackish water in the world, the Baltic Sea is of special interesting to scientists.

Some heating devices chemist energy like that found in wood and coal into heat energy.

The novel and the shortstory are the literary forms most commonly called “fiction”, but contemporary narrative poetry and dram were also form fiction

It was near end of prehistoric times thatfirst wheeled vehicles appeared.

Many theories on conserving the purity of water has been proposed but not one has been widely accepted as this one.

Stephen Hopkins was  cultural (and political leadership in colonial Rhode Island.

You needn’t do that when the maid is here, _____?