If you work hard, you would be successful in anything you do.

The harder he tried, the worst he danced before the large audience.

Neither his parents nor his teacher are satisfied with his result when he was at school.

There are many reasons why a particular species may become endangering.

More than ten students have failed the exam, that surprised the class teacher.

I was amazed that Smith showed so few grief at his mother’s death.

A novel is a story long enough to fill a complete book, in that the characters and events are usually imaginary.

The earth is the only planet with a large number of oxygen in its atmosphere.

When you are writing or speaking English it is important to use language that includes both men and women equally the same.

Teddy Roosevelt demonstrated his competitive spirit and tireless energy in 1905 whenever he led the Rough Riders up San Juan Hill.

In the early 1900's, Pennsylvania's industries grew rapidly, a growth sometimes accompanied by disputes labor.

When many of my friends take a shower in the morning, I usually take one before bed.

Generally, Europe and Asia are regarded as being distinct continents, but they are simply vast geography divisions of the larger lad mass known as Eurasia.

I think she will be suitable for the work because she has been working like a teacher for a long time.

Henry David Thoreau was an American writer who is remembered for his faith in religious significance of the nature.

What we know about certain diseases are still not sufficient to prevent them from spreading easily among the population.

Women in many parts of the world have had lower status than men, which the extent of the gap between genders varies across cultures and times.

Students suppose to read all the questions carefully and find out the answers to them.

Most of the houses on the street was built in the previous century.

Society uses such human emotions as proud, shame, guilt, and fear to maintain itself.

The developing of the submarine was hindered by the lack of a power source that could propel an underwater vessel.