Professor Johnson is said（）some significant advance in his research in the past year.

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• 1Mr. White works with a chemicals import & export company, but he（）for this industrial fair, since he is on leave.

  A.has worked

  B.works

  C.has been working

  D.is working

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• 2Come and see me whenever（）.

  A.you are convenient

  B.you will be convenient

  C.it is convenient to you

  D.it will be convenient to you

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• 3Jack（）from home for two days now, and I am beginning to worry about his safety.

  A.has been missing

  B.has been missed

  C.had been missing

  D.was missed

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• 4（）conscious of my moral obligations as a citizen.

  A.I was and always will be

  B.I have to be and always will be

  C.I had been and always will be

  D.I have been and always will be

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• 5James has just arrived, but I didn’t know he（）until yesterday.

  A.will come

  B.was coming

  C.had been coming

  D.came

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• 6If there were no subjunctive mood, English（）much easier to learn.

  A.could have been

  B.would be

  C.will be

  D.would have been

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• 7（）for the fact that she broke her leg, she might have passed the exam.

  A.Had it not been

  B.Hadn'tit been

  C.Was it not

  D.Were it not

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• 8（）if I had arrived yesterday without letting you know beforehand?

  A.Would you be surprised

  B.Were you surprised

  C.Had you been surprised

  D.Would you have been surprised

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• 9My boss ordered that the legal documents（）to him before lunch.

  A.be sent

  B.were sent

  C.were to be sent

  D.must be sent

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• 10It is imperative that the government（）more investment into the shipbuilding industry.

  A.attracts

  B.shall attract

  C.attract

  D.has to attract

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