Short-wave radios that can receive and transmit signals are used by pilots, the police, and amateur operator.

The geology professor showed us a sample about volcanic rock which dated back seven hundred years.

Michael has worked in three different companies in three different positions, so he has more work experience than the other applicant’s.

The world’s rain forests are being cut down at the rate on 3000 acres per hour.

A computer networks usually includes either selected employees of a particular business or or people who do not work together but have similar interests

This bird’s tail is double as long as its body.

Nowhere he could find a good place to study, so he returned to his dorm.

Some children, before going to school, go to kindergartens, officially are called nursery schools.

Where is the picture _________ was on the wall?

Choose the best option to complete the sentences:  _______ I get, _______ I am.

It’s a lovely old house, I agree, but can we afford to moderning it?

The flag over the White House is risen at dawn every day by a color guard from the United States armed forces.

___________it was late, we decided not to stay in their hotel.

Only averaged about 5 feet above sea level, the Marshall Islands would disappear under the Pacific should the Arctic icepack melt.

Compact discs, which appeared on the market in the early 1980s, produce sound of better quality than those of Standard phonograph records

Because of its vast tracts of virtually uninhabited northern forest, Canada has one of the lowest population density in the world.

Polio, one of a group of spinal inflammations, causes fever and paralysis often resulting in disabled and deformity.

Lassen National Park, the situation of a dormant volcano, is one of the most beautiful but least visited parks in the western United States.

Choose the letter A, B, C, D to indicate the correct answer to each of the following questions:

Keep silent! The baby (sleep) ____________ .

Choose the best option A, B, C or D to make meaningful sentence: "If only my mother_____ enough money, she could have bought that beautiful bicycle for me."

Choose the letter A, B, C, D to indicate the correct answer to each of the following questions:

This house _________ in 1990 by my grandfather.