I walked ___ the office. 

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Woody Guthrie has wrote thousands of songs during the lifetime, few of which became classic folk songs .

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Many theories on conserving the purity of water has been proposed but not one has been widely accepted as this one.

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The bodies of cold animals have same temperature their surroundings, but those of warm animals do not .

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The direct (sources of water lakes are rain, melted snowy and ice

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One of the most beautiful botanical gardens in the United States is the wildly and  Magnolia Gardens next to Charleston, South Carolina.

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

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The steam engine is usually thought of as a relative modern invention, but the Greeks built a kind of steam engine when ancient times

_________ she was brought up.

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The company suffered substantial losses after stock market crash (and found it difficult for recovering.

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In the sixteenth century, Francois Vieta, a French mathematician, used the vowels to represent a unknown number.

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

I think you ____ do exercise regularly in order to keep your body in good shape.

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We call her as ‘Auntie Flo’, though she is not really in relation to us .

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A coral reef, a intrication aquatic community of plants and animals, is found only with warm, shallow, sunlight seas .

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Many small islands in the Indian Ocean are threatened by raising the sea levels.

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“ It is not a good essay,” said the lecturer. “I find your arguments convince ”.

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Many young people lack of skills, good education, and finance to settle in urban areas where most jobs are found

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

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Though he did not develop sign language, Laurent Clerc brought it America from France.

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For they, the biggest success was winning the golden prize.

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In purchasing a winter coat , that is very important for trying it on heavy clothing underneath.