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The first vaccine ever developed was used to combat and fight a smallpox, a disease resulting to infection by a virus.

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People with exceptionally high intelligence quotes may not be best employees since they become bored of their work unless the job is constantly changing 

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Karen hasn’t decided still if she wants to run for the Presidency again year.

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Each stanza of a poem has a repeatable pattern of meter and rhyme and is normally division from the following stanza by one blank line.

Move the books _____ the second shelf. 

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

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

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The threat of being dismissed do not worry me more because I have started my own business

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Lunar eclipses happen only if the Moon is full, but they do not occur at an every full of the Moon.

Let’s go to the movie,……………….?

Choose the corect answer to complete. "Don't be afraid ____ her if you have any further queries."

He wanted to know_________  .

Choose the corect answer to complete. " It would be unreasonable to expect him _______ you money if you didn't pay it back."

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For many years, people have wondered  that if life exits elsewhere in the universe.

The boy run_______the stairs to call his mother. 

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

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When a simple love action such as lifting one’s arm is performed, the work is divided between at least three different muscle groups

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Electric motors range in size from tiny mechanisms that operate sewing machine the great engines in heavy locomotives

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We mustvery careful with sensitive issues such like this, avoid giving offence.

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After George had returned to own house, he was reading a book.

Choose the corect answer to complete.  " It's ____ for me to submit the project on time as it's really difficult."