Before television became so popular, Americans used to entertain each other in the evening by playing games, saying stories, and singing songs.

Industrialist Henry Ford introduced assembly-line techniques into the manufactures of motor vehicles.

Jobs which are highly paid in some countries are badly paid in other.

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

In the nineteenth century, women used quilts to inscribe their responses to social, economic, and politics issues.

All the schools throughout of the country underwent the educational reform

Conservation organizations help for to preserve the ecology of an area by keeping track of endangered species.

 I told Mom we would be ...................home in ...................hour or so. 

The average salt content of seawater is more than three percents

If a glass lizard loses its tails , a new one grows to replace it

It is a common knowledge that Douglas intends to retire at the end of the season

Choose the best option:

The____ is the air, water and land in or on which people, animals and plants live.

Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles

Some of us have to study their lessons more carefully if we expect to pass this examination.

Either humans and animals learn by experience, and what is learned influences the planning and carrying out of simple actions.

Before the formation of labor unions, individual workers had almost not voice in determining their wages, hours, or working conditions.

Some psychologist believe that those who are encouraged to be independent, responsible, and competent in childhood are likely more than others to become motivated to achieve.

Esperanto is an unique language because it was created by a man called Ludwig Zamenhoff.

I would have gone with him to Washington except I had had no time

I really hope my sister will apply for that new job; she will be so good with it

For thousands of years, people have used some kind of refrigeration cooling beverages and preserve edibles