The ozone layer must be protected because it shields the Earth from excessive ultraviolet radiations.

We have rented two videos and watched them with some friends last night.

Choose the best answer:
The dress you bought is of very good quality. It ______ very expensive.

The manufacture and production of steel was one of the industries on which the country prosperity was founded.

Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

I try to do my homework___________ the noise.

Men are traditional decision-makers _________ bread-winners.

The author Susan Glaspell won Pulitzer Prize in 1931 for hers play, Alison’s House.

The builders of the variety ancient cliff ruins scattered throughout the canyons and mesas of the arid Southwest of the United States are known as the cliff dwellers.

Million of people lost their jobs in the 90’s. This, in turn, caused social dissatisfaction with the political leaders who had promised jobs and prosperity.

Every year, tornadoes cause a lot of damages to property and a tremendous loss of human and animal life.

The international Red Cross, which has helped so many nations, won the Nobel Peace Prize three times for their efforts to reduce human suffering

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__________ the dolphin lives in the sea, it is not a fish – it’s a mammal.

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He wouldn’t have failed his exams__________ he hadn’t been ill.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

I’m looking for ________ job. Did Mary get _____ job she applied for?

Tom didn’t believe in us, and it took along time to convince him.

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We _________ some food to tomorrow’s party.

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

The visitor asked me where I _________ from.

Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

Marian didn’t participate in the contest__________ her lack of confidence.

Although he was happily married, he preferred spending lately hours at work to spending evenings lately at home.

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If you want to join the History Society, you must first_________ this application form.

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Concord used to be _______ passenger plane in the world.