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Certificates provide proofs of your ____.

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 I was only absent ____ the office for a few minutes!

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She became a full-time member of ____ last year.

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The ____ for this position starts at thirty thousand euros per year.

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Shelley disagreed with the board's decision so she ____ and went to work for another company.

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Being a flight attendant is a ____ job. You may have to work long hours on long haul flights and not get enough sleep.

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 I think that doing medical research would be really ____ because this job would save people's lives.

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 I am writing in ____ to your advertisement on Vietnamework.com for the post of a personal assistant.