They studied what ______ since 2007 and found Australian electricity prices were among the  highest in the developed world.

试卷相关题目

• 1The doctor advised me to go on a diet because I _____ weight during the last two months.

  A.put on

  B.have put on

  C.had put on

  D.would put on

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• 2By the end of last week, we ________ a satisfactory solution to the problem.

  A.have found

  B.will be finding

  C.had found

  D.found

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• 3By the time I got home yesterday, my husband _______ cooking the dinner.

  A.had finished

  B.finished

  C.has finished

  D.finishes

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• 4—How long _______  in Shanghai? —I will be there attending a conference and giving a speech, which will take about 3 days.

  A.have you stayed

  B.are you staying

  C.do you stay

  D.did you stay

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• 5Oh, it's you! I __________ about our meeting here.

  A.have never dreamed

  B.had never dreamed

  C.never dream

  D.never dreamed

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• 6--- Haven't I told you that you should be home earlier? --- Yes, but I _____  home earlier than I usually do.

  A.was coming

  B.will come

  C.came

  D.had come

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• 7They are living with their parents for the moment because their own house ____.

  A.is being rebuilt

  B.has been rebuilt

  C.is rebuilt

  D.has rebuilt

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• 8-I remember you were a talented pianist at college. Can you play the piano for me? - Sorry, I ______ the piano for years.

  A.don't play

  B.wasn't playing

  C.haven't played

  D.hadn't played

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• 9When I got home, I _____ I had left my wallet in the taxi

  A.was realizing

  B.realized

  C.have realized

  D.would realize

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• 10Jane _____ these families of chimps for many years and helped people understand how much they behave like humans.

  A.had studied

  B.studied

  C.studies

  D.has studied

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