Geologists find it useful to identification fossils in rock sample because certain assemblages of species are characteristic specific geologic time periods.

To receive (a degree from an American university, one must take many courses beside thos one’s major fiel

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That lecturer, his name I have forgotten, is very well-known .

Electric wire carry current for lighting and outlet designing for household appliances.

Needles are simple look tools, but they are very relatively difficult to make.

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Life expectancy has increased the great deal in spite of modern medicine and technology.

I prefer living in a nuclear family than a joint family.

In his famous domes, architecture Buckminster Fuller utilized thousands of simple equilaterally triangles linked together.

My father doesn’t know speak Korean

 telephone, satellite TV, fridge and other facilities are available in our hotel rooms

Most of the damage property attributed to the San Francisco earthquake of 1906 resulted from fire that followed

Of the much factors that contributed to the growth international tourism in the 1950’s , one of most important was advent of jet travel in 1958.

Above 80 percent of the laborers at construction site are temporary workers.

The National Basketball Association will not let any athlete to continue playing league unless he submits voluntarily to treatment for drug addiction.

The picture of the soldiers ………………. back a lot of memories. 

Generally speaking, a magnitude 1.0 earthquake on Richter scale is detected by instruments not by person 

A police spokesperson confessed that detectives were baffled by Mr. Day’s disappear, but were hoping to come up with explanation

The weightlifter who allegedly took rformance-enhancing drugs have been named today

Bill was about average in performance in comparison with students in his class.

Compact discs, which appeared on the market in the early 1980s, produce sound better quality than those of Standard phonograph records

Only when black bear has been spotted by forest rangers will this portion the park be closed down.