Developing new technologies are time-consuming and expensive.

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.

Mary and her sister just bought two new winters coats at the clearance sale.

Everyday in summer, but especially at the weekends, all kinds of vehicles bring crowds of people to enjoy the various attraction.

When a lion gets hungry, its manner changes and it becomes threatened.

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

In most countries music songs are deeply personal and deal with themes of love, lonely, and separation.

Tom said that he was trying to carry out some campaigns to protect environment and will encourage others to do so.

Despite the long history of the rights of property ownership, there have been a great deal of disagreement over what such rights entail.

Neither William or his brother stole the rambutans from our orchard.

My elder sisters, both of them were doctors, said they were too busy to pick me up.

Mercury and alcohol are widely used in thermometers because their volume increases uniform with temperature.

Would you mind showing me how working the lift?

My father asked me where had I gone the night before.

My pen has very few ink in it, so could you give me some

Had I been interested in that subject, I would try to learn more about it.

The eastern bluebird is considered the most attractive bird native of North America by many bird-watchers.

He passed the exams with high scores, that made his parents happy.

Unlike the old one, this new copier can perform their functions in half the time.

Since January this year, Joe has suffered two injuries, one to his ankle and the other in New York.

What happened in New York were a reaction from city workers, including firemen and policemen who had been laid off from their jobs.