_____ is known to us all is that America is a developed country _____ the First World.

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• 1He had a wonderful childhood, _____ with his mother to all corners of the world.

  A.travel

  B.to travel

  C.traveled

  D.traveling

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• 2Unfortunately, his father died, _____ the family even worse off.

  A.left

  B.to leave

  C.leaves

  D.leaving

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• 3They sat face to face, _____ about the things they were interested in for a long time.

  A.and talk

  B.talking

  C.to talk

  D.talked

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• 4______ their hats into the air, the fans of the winning team let out loud shouts of victory.

  A.To throw

  B.Thrown

  C.Throwing

  D.Being thrown

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• 5_____ from the moon, our earth with water _____ seventy percent of its surface, appears as a blue ball.

  A.Seen, covered

  B.Seeing, covering

  C.Seen, covering

  D.Seeing, covered

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• 6He is a student at Oxford University, _____ for a degree in computer science.

  A.studied

  B.studying

  C.to have studied

  D.to be studying

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• 7_____ from the space, you will find the earth is blue.

  A.Seen

  B.Seeing

  C.See

  D.To see

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• 8My sister, an inexperienced rider, was found sitting on the bicycle _____ to balance it.

  A.having tried

  B.trying

  C.to try

  D.tried

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• 9A powerful earthquake struck Haiti's capital, _____ tens of thousands homeless and buried in ruins.

  A.left

  B.to leave

  C.being left

  D.1eaving

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• 10_____ along with host families, I believe, language travel students are likely to get enough language practice.

  A.Stay

  B.Having stayed

  C.Staying

  D.To stay

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