It’s common knowledge that ________ United States is one of ______ biggest developed countries in the world.
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/; the
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the; the
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/ ; /
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---Have you seen____pen? I left it here this morning.---Is it ____black one? I think I saw it somewhere.
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a; the
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the; the
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the; a
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It is said that ____ wool produced in Australia is of ____ high quality.
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/ ; /
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the ; /
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the ; a
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the ; the
I often have conversation with John over _____ phone, but keep in touch with Tom by writing _____ letters.
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/; the
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/; a
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the; a
Wang yapping is ______ second woman astronaut in China who reached _____ space.
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/; the
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the; /
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the; the
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a; a
— Sally, was ________ problem solved?— We were trying to think of ________ way out, but it was hard to find one.
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the; a
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a; a
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a; the
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the; the