With the death of Libyan leader Muammar Gadhafi on Thursday, the country's new leaders ______ the challenge of rebuilding a war-torn nation.  

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• 1With more forests being destroyed, huge quantities of good earth ______ each year.

  A.is washing away

  B.is being washed away

  C.are washing away

  D.are being washed away

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• 2Teenagers _____ their health because they play computer games too much.

  A.have damaged

  B.are damaging

  C.damaged

  D.will damage

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• 3— Have you seen Tony recently?   — No, but I ______ dinner with him on Sunday.  

  A.would have

  B.have had

  C.have been having

  D.am having

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• 4To prepare for the Olympic Games in summer, London ____ its largest ever exercise to test the response of emergency services.

  A.planned

  B.is planning

  C.had planned

  D.plans

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• 5Ladies and gentlemen, please fasten your seat belts. The plane______.

  A.takes off

  B.is taking off

  C.has taken off

  D.took off

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• 6—Ready to quit guessing, Sandy?—No, no, I hold on! I think I        to the answer.

  A.come

  B.have come

  C.came

  D.am coming

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• 7一Ready to give up guessing，Sandy? 一No，no，hold on! I think I______ at the answer now．

  A.arrive

  B.am arriving

  C.have arrived

  D.will arrive

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• 8Email,as well as telephones,________an important part in daily communication.

  A.is playing

  B.have played

  C.are playing

  D.play

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• 9—  Ready to quit guessing, Sandy?— No, no, I hold on! I think I______ to the answer.

  A.come

  B.have come

  C.am coming

  D.came

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• 10Professor Smith, along with his assistants,______ on the project day and night to meet the deadline.

  A.work

  B.have worked

  C.is working

  D.are working

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