2008 was a great year，since when it ______great changes in China．

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• 1—How did your students express their thanks to you on Teachers' Day? —A gift together with many flowers _______ sent to me .

  A.was

  B.am

  C.have been

  D.had been

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• 2. In the rainforest of the Amazon, 50 to 150 plant species _____ every day.

  A.have been destroyed

  B.are destroying

  C.are being destroyed

  D.destroyed

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• 3Great changes _________ in China in the last two decades.

  A.have taken place

  B.took place

  C.have been taken place

  D.are taking place

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• 4—I wonder if you could go to the movie with me. —Oh, just leave me alone. I _______ a composition all the morning and haven't finished yet.

  A.write

  B.was writing

  C.have written

  D.have been writing

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• 5I remember putting the tape recorder in the corner, but what _______ it?

  A.has happened on

  B.has become of

  C.has happened

  D.has taken

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• 6The No. 8 bus _______ to Chengdu college of Geology, and not to Sichuan University.

  A.are gone

  B.is being gone

  C.goes

  D.are going

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• 7－Why is you professor so happy recently? －Because the theory she insisted on__________correct.

  A.is proved

  B.proving

  C.was proved

  D.has proved

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• 8To our delight, up till now, the European Union, Japan, and Russia ________ their targets for CO2 emissions (排放).

  A.give

  B.have given

  C.give

  D.gave

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• 9—You shouldn't have gone there alone last night. —But I __________ , because Xiao Wang went there, too.

  A.didn't

  B.had to

  C.did

  D.should

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• 10. I can't receive your phone call at 8 o'clock tomorrow, because I ____ the meeting.

  A.am attending

  B.will attend

  C.will be attending

  D.am to attend

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