All of  the mammals, dolphins are undoubtedly among friendly to human.

In the sixteenth century, Francois Vieta, a French mathematician, used vowels “a”, “e”, “i”, “o”, “u” to represent a unknown number.

Because not food is as nutritious for a baby as its mother’s milk, many women are returning practice of breast feeding.

The authorities are worried the increase of drug abuse.

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

Runner Wilma Rudolf win three gold medals at the 1960 Olympics, and she set the world record for 100 – meter dash in 1961.

Nuclear powers production in the us is controlled by the Nuclear Commission

When Keith visited Alaska, he lived in a igloo in the in the winter months as well as in spring.

Neither of the girls have turned in the term papers the instructor yet

Many of the population in rural areas is composed of manual workers

I read something about Taranrino’s new film on that magazine.

Alcoholic beverages vary widely in content, ranging from only 2 or 3 percent for light beers to as high to 60 percent some vodkas and brandie

In the early days of development, jet engines used numbers of fuel

Choose the best option:

The plants which ................ in the living room need a lot of water.

Cosmic distance is measured on light -years.

Among the parameters that determine whether an environment is suitably for life as we know are temperature, water availability,oxygen content.

It sends copies of letters and pictures from one machine to another, called a …………machine.

You pay about $50 per person and can having dinner,breakfast there

The chemical _____________ from cars and factories make the air, water and soil dangerously dirty.

Everything is alright, ________?

Despite its smaller size, the Indian Ocean is as deep the Atlantic Ocean.