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

Publishing in the UK, the book has won a number of awards in recent regional book fairs.

Building thousands of years ago, the ancient palace is popular with modern tourists.

I am now in my attempt winning a place at the same university to my brother.

Regarding as one of the leading figures in the development of the short story, O Henry is the author of many well- known American novels.

If I had studied carefully, I wouldn't made so many mistakes.

Has the government made a decide to ban the use of chemical weapon yet?

Bill is often late for class, which makes his teachers angrily.

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

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

Narcissus, a character in mythology, gazed at his own image in a pool so ardently that he fell into itself and downed.

Neither the Minister nor his colleagues has given an explanation for the chaos in the financial market last week.

It is vitally important that she takes this medication night and morning.

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

Optimists believe that in future we will be living in a cleaner environment, breathing fresher air and eat healthier food.

By the turn of the century, most of the inventions that were to bring in all the comforts of modern living has already been thought of.

Some people often say that using cars is not as convenient than using motorbikes.

By the time Robert will finish writing the first draft of his paper, most of the other students will have completed their final draft.

In the end of the party, Mary found herself washing the dishes alone again, as usual.

Today, although their status varies from country to country, women in most parts of the world have gained significance legal rights.

Foreign students who are doing a decision about which school to attend may not know exactly where the choices are located