You shouldn't have the machines ______ all the while. You ought to have them ______ now and then.

试卷相关题目

• 1The survey_________in our school last month shows that about 2 percent of the students are addicted to Internet games.

  A.conducting

  B.having been conducted

  C.conducted

  D.to be conducted

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• 2______everything into consideration ,they ought to be given another chance.

  A.Taken

  B.Taking

  C.To take

  D.Having taken

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• 3.He went to American _________some English as well as ________.

  A.learning ,to travel

  B.learning, traveling

  C.to learn, travel

  D.to learn ,to travel

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• 4---Will you lend me some books on Chinese poems? ----Yes, of course, but now there's no more than one book for you________.

  A.to be chosen from

  B.to choose

  C.to choose from

  D.for choosing

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• 5The news shocked the public, _______ to great concern about students' safety at school.

  A.having led

  B.led

  C.leading

  D.to lead

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• 6. _____and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.

  A.To be tired

  B.Tired

  C.Tiring

  D.Being tired

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