Among the world’s 44 richest countries, there has been not war since 1945.

An important factor should be considered is Mr. Lopez’s ability to keep the new restaurant going for several months with limited revenue

The biologist found some pollutants, a little of which can be considered very harmful to fish and other living organisms in the river.

Either Mr. Anderson or  Ms Wiggins are going to teach our class today.

When her son, Nick fell and injured his knee, she refused to pay for a doctor and spent hours looking up free medical help.

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

The mail comes at ten o'clock every day_______ Sunday.

In the beginning, radios cost much more than they do today because they turned out slowly and expensively by hand.

An effective paragraph must _______ be unified and ordered but also complete.

I couldn't unlock it_______ I had the wrong key.

In about, experimental psychologists have devoted more research to learning than to any other topic.

Choose the word or phrase that can substitute for the underlined word. In Britain, the most common leisure activities are home-based.

Unfortunately, much of the early history of Zimbabwe is still unknown, for example, we know a little about the early patterns of settlements.

More than 10,000 years ago, glaciers moved across the Minnesota region four time, leveling most of the land.

Since it was so difficult for American Indians to negotiate a peace treaty or declare war in their native language, they used a universal understood form of sign language

They are ugly and expensive, _______ people buy them.

The top of the mountain covered with snow during winter

A telephone, a satellite TV, a fridge and the other facilities are available in our hotel rooms.

He has got several hundred bottles of wine which he keeps in the cellar below his house.

The pace of living is too fast for me in this town. I need to move to a village, where everything happens more slower

The right to vote granted to women after only the adoption of the 19th Amendment in 1920.