Up to now, ________ space exploring still remains ________ very risky, complex, and expensive endeavor.

Despite  of rain and snow, there are always more than fifty thousand fans at the OS football games

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Chemical compounds with Barium, Cobalt, and Strontium are responsible to number of the vivid colors (in fireworks.

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There is no Oxygen in space to support combustion of fuels as is there in the air on the Earth

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Most bats roost in crevices, caves, or building by day and are active at night or twilight

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When actively hunting, a dolphin sends out transmitting about five signals in every second.

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

An allergy is an immune system response __________  a foreign substance that’s not typically harmful to your body.

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Despite of rain or snow, there are always more than fifty thousand fans at the OSU football games.

Every day, we ________ a great deal of food from poultry.

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National forests including land animal grazing, as well as wilderness areas with scenic mountains and lakes.

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Both  Mr. and Mrs. Smith are explaining the children the rules of the game .

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The surface of Venus is almost completely hid by the thick clouds that shroud it.

 More advanced computers will be able to be creative, respond to feelings in a feeling way, develop intuition, recognize patterns, and suggest __________ alternatives.

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Neither of the two candidates who had applied for admission to the Industrial Engineering Department were eligibleadmission.

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They took the coffin with the captain’s body and carrying it to cemetery to bury him.

When he ....................... at the station, his train already..................... 

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Unexploded bombs buried deep in the ground have been found in construction site opposite of the City Hall

I’ve never fallen in such a(n) ............................ situation before.

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It was after shortly microscopes were introduced at the beginning of the seventeenth century that micro organisms were actually sighted.

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Some of the agricultural practices used today is  responsible for fostering (desertification.