Sex's education is instituted to help the student understandthe process of maturation, to eliminate anxieties related to development, to learn values, and to prevent disease.

A dangerously situation was created by the bad roads.

Sometimes it takes me about three hours finishing my round.

Her weigh has increased remarkably since she began receiving treatment.

Did you say that you will have a lot of things to do the following week?

Dresses, skirts, shoes and children’s clothing are advertised at great reduced prices this week.

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

Despite she was in her middle age, she looked very graceful and charming.

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

Some of my friends are good at English while other are good at Mathematics.

Two weeks are plenty of time to finish the assignment.

Paris is much more exciting as I expected.

Thomas refused to join the school basketball team, this was not good news at all.

The chief of police demanded from his assistants an orderly investigation, a well-written report, and that they work hard.

The Games' organizers faced significant bed shortages because the record number of more than 13,000 athletes and officials who attended the 2006 Games

Air pollution, together with littering, are causing many problems in our large, industrial cities today.

It is difficult to write rules that tell exactly when we should apologize, and it is not difficult to learn how to do it.

Manufacturers may use food additives for preserving, to color, or to flavor, or to fortify foods.

The police is looking for the bank robbers who stole a large sum of money from the bank.

For thousands of years, man has created sweet-smelling substances from wood, herbs and flowers and using them for perfumes or medicine.

In today's competitive markets, even small businesses had better to advertise on TV and radio in order to gain a share of the market.