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Have you learnt the reason why does water of the ocean becomes blue ?

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The amount of books in a Library of Congress is more than 58 million volume tapes.

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In the early of jet development, jet engines used great numbers of fuel.

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In the 1920’s, the cinema became an important art form and one of the ten largest industry in the United States

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About 200 million years before, continents were part one vast land mass called Pangaea.

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Thanks to this obstinacy, he achieved what he wanted. If he were discouraged earlier by him failures, he would not have reached his aims.

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In The Sociology of Science, now considered a classic, Robert Morton discusses cultural, economy and social forces that contributed to the development of modern scienctifics.

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When scientists discovered how soap works, it became possible to do synthetic detergents of Petroleum.

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The girls were sorry to had missed the signers when they arrived at city airport.

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I’ve got my photos drying out the kitchen floor, so whatever you will do, don’t tread on them!

Malaria can be controlled _____ attacking the parasite. 

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Alcoholic beverages vary widely in content, ranging from only 2 or 3 percent for some light beers to as high to 60 percent for some wines and brandies.

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Some exercises such as calisthenics, running, or to swim involve producing muscle tension through range of movements that are called isotonics.

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Before invention of printing press, books have been all printed by hand.

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Pop Art was a movement of the 1950’s and 1960’s whom imagery was based on the recognized American products and people .

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When someone …………… a poem or other piece of writing, they say it aloud after they have learn it.

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Ur Consumers have formed co-operatives to provide themselves with necessities such groceries, Household appliances, and gasoline at lower cost

Choose the correct answer. "O. Henry’s stories have been ________ all over the world."

You have just given on acquantance a lift to the supermarket, then he/she asks you:

-Your friend. “Could you wait until I come back?”.

-You. “_________”

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

We request that she ____ the window.

Choose a, b, c, or d that best completes each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.

The house was very quiet when I…………home. Everybody had gone to bed.