The classroom is so dirty that it needs________ badly.

试卷相关题目

• 1If Newton lived today, he would be surprised by what _______ in science and technology.

  A.had discovered

  B.had been discovered

  C.has discovered

  D.has been discovered

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• 2I insisted that a doctor _______ immediately.

  A.has been sent for

  B.sends for

  C.be sent for

  D.will be sent for

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• 3If their marketing plans succeed, they _____ their sales by 20 percent.

  A.will increase

  B.have been increasing

  C.have increased

  D.would be increasing

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• 4It's been years since I _____ myself so much.

  A.enjoy

  B.enjoyed

  C.have enjoyed

  D.had enjoyed

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• 5When I said someone cheated in the English exam, I ______ you.

  A.wasn't referring to

  B.had referred to

  C.hasn't referred to

  D.will refer to

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• 6I'm not familiar with this place. It's the first time I _____ here, you know.

  A.am

  B.was

  C.have been

  D.had been

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• 7One third of the class _____ agreed to be volunteers to help the aged this vocation.

  A.are

  B.is

  C.has

  D.have

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• 8The United States _______one of the lowest smoking rates －25.5 percent of the population.

  A.is

  B.have

  C.has

  D.are

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• 9When the old man__＿___to walk back to his house，the sun__＿＿__itself behind the mountain．

  A.was starting；hid

  B.had started；had already hidden

  C.had started；was hiding

  D.started；had already hidden

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• 10For more than a decade, experts from across the globe ________ on the cure of the disease that way.

  A.worked

  B.are working

  C.have been working

  D.were working

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