Despite the photos, the scientists are still _________ about the existence of the monster because the area at such high altitude is ________ to support such a creature..

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• 1The students were ____ over the ____ problem,  listening to the teacher with a ____ expression on their faces.      

  A.puzzled; puzzling; puzzling

  B.puzzled; puzzling; puzzled

  C.puzzling; puzzling; puzzled

  D.puzzling; puzzled; puzzling

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• 2John is very _____ if he promises to do something he'll do it.   

  A.independent

  B.confident

  C.reliable

  D.flexible

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• 3Lizzie was _____ to see her friend off at the airport.       

  A.a little more than sad

  B.more than a little sad

  C.sad more than a little

  D.a little more sad than

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• 4The poor man , _____, ran out of the dark cave.

  A.tiring and frightened

  B.tired and frightened

  C.tired and frightening

  D.tiring and frightening

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• 5Don't treat me like a criminal. Everyone in the world knows that I am  _____!

  A.unique

  B.stubborn

  C.innocent

  D.potential

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• 6— I'd like your help tomorrow.— No problem, but can you be more _______ so that I can make advance preparations?

  A.serious

  B.brief

  C.formal

  D.specific

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• 7Studies have shown that our most _____ scientists produce not only some of the best ideas, but also _____ bad ones.

  A.respected; a great many of

  B.respectable; a great deal of

  C.respected; a great deal of

  D.respected; a great many

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• 8His request was so _____ that it was turned down at once.

  A.exact

  B.absurd

  C.regular

  D.urban

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• 9Student Council asks for _____ service to help the poor students.

  A.valuable

  B.volcano

  C.voluntary

  D.voltage

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• 10You can't throw the waste everywhere. You should keep the classroom _____.

  A.quiet

  B.neat

  C.orderly

  D.bright

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