In human beings, as in other mammal, hairs around the eyes, in ears and in the nose prevent dust, insects, and other matters from entering these organs.

This will have a serious effect about agriculture

Numerous types of cells, such as skin cells and white blood cells, have the power reproduce asexually.

Since the Great Depression of the 1930’s, social programs such as Social Security have been built into the economy to help avert severity business declines

As you come to each town, however small, you will see a sign which states the name of the town and how many inhabitants does it have.

Had we known the traffic would be so bad, we did not drive back from work so early.

Prevented the soil from erosion, the trees are planted by the farmer many years before were which stopped the flood from reaching his house.

Some children, before going to school, go to kindergartens, officially are called nursery schools.

All the students are looking forward spending their free time relaxing in the sun this summer.

There are many different ways of comparing the economy of one nation with those of another.

He scored so good a goal that a wild cheer raised from the stands.

The Library of Congress, located in the nation’s capital, houses history documents and photographs as well as most books published.

She feels lonely because she doesn’t know many people there. She wishes she ____ more people. 

Many scientists contributed to the development of television, whether no one can be said to have invented it.

If his grades had been better, he would accept as a graduate student on the MBA program.

A coral reef, a intricate aquatic community of plants and animals, is found only in warm, shallow, sunlight seas

Before the invention of the printing press, books have been all printed by hand.

The bold way in which Margaret Mead defined the terms “family” – based as much on choice as on biological relationship – is possibly the most enduring of her legacies.

The young are thought to be the future leaders of the country, and it is essential that they should understand their heritage as full as possible.

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

Would you show me ................... shortest way to …………. airport