In the past twelve months the research members _____ the effectiveness of many materials in a home building.

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• 1Tom is so lazy that it is the third time that he _____ late this week.  

  A.is coming

  B.comes

  C.came

  D.has come

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• 2The country life he was accustomed to________ greatly since 1992.

  A.has changed

  B.change

  C.changing

  D.have changed

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• 3For many years,people _____ electric cars. However, making them has been more difficultthan predicted.    

  A.had dreamed of

  B.have dreamed of

  C.dreamed of

  D.dream of

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• 4He is the only one of the students who _____ winner of scholarship for three years.

  A.is

  B.are

  C.have been

  D.has been

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• 5—  Would you care for a cup of coffee?   — I ________ one. Thank you just the same.  

  A.had

  B.have had

  C.would have

  D.will have

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• 6It is the first time that the local education authority ________ such strict requirements on    going-to-school time for primary and middle school students.

  A.makes

  B.has made

  C.had made

  D.made

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• 7She knows so much about England. She _____ there before.

  A.must be

  B.must live

  C.must have been

  D.must have lived in

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• 8—Why is your 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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• 9Marie Logan likes designing solar racing cars. She _____ five or six different cars so far.

  A.designs

  B.will design

  C.has designed

  D.is designing

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• 10He is the only one of the students who _____ a winner of scholarship for three years.

  A.is

  B.are

  C.have been

  D.has been

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