My friend, David, was not used __________ by air, so he felt unwell.

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• 1She told me_____that she would not be at the meeting and asked me not to give it away.

  A.out of breath

  B.saving her breath

  C.holding her breath

  D.losing her breath

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• 2Tina, ________ for months to find a job as a waitress, finally worked as a tour guide at a local advertising agency.

  A.struggling

  B.struggled

  C.having struggled

  D.to struggle

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• 3The conference the_____ possibility of closer trade links.

  A.rejected

  B.investigated

  C.proposed

  D.postponed

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• 4Gunpowder is generally believed __________ in ancient Chin

  A.A.to have invented

  B.being invented

  C.to have been invented

  D.having invented

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• 5More Than a Game, a documentary which follows NBA star LeBrown James's path _________ a star, came out on October 2, 2009 in the US.

  A.to become

  B.to becoming

  C.in becoming

  D.during becoming

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• 6________ more effectively with others, more and more people equip themselves with a higher education.

  A.To compete

  B.Being competed

  C.Competing

  D.Competed

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