_____ many times, John still couldn't work out the problem.

试卷相关题目

• 1________in the queue for half an hour, the old man suddenly realized he had left the cheque in the car.   

  A.Waiting

  B.To wait

  C.Having waited

  D.To have waited

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• 2_____ a written permission, he had to write another letter to the president of the university.

  A.Not giving

  B.Not having been given

  C.Having not given

  D.Having not been given

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• 3_____ many times, he finally understood it.

  A.Told

  B.Telling

  C.Having told

  D.Having been told

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• 4You were fortunate enough to escape ________ for drunken driving, but don't drink again.

  A.fining

  B.to fine

  C.being fined

  D.to be fined

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• 5— Any danger for the patient _______ on by Dr. Smith?— Hard to say. Doctors are trying their best.

  A.to operate

  B.being operated

  C.to be operated

  D.operating

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• 6____ my homework, I have no time for computer games.   

  A.Not finishing

  B.To be finishing

  C.Having not finished

  D.Not having finished

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• 7 _______ to reach them on the  phone, we sent an email instead.     

  A.Fail

  B.Failed

  C.To fail

  D.Having failed

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• 8New policies, _______ to insure that compulsory education is truly free, _______by the local government across China since the start of school on September 1.

  A.intending; have been made known

  B.intended; have been made known

  C.intending; are made known

  D.intended; had made known

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• 9Now that we've discussed our problem, are people happy with the decisions _______?

  A.taking

  B.take

  C.taken

  D.to take

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• 10_____ a US visitor visa twice, the young man finally gave up his hope of going to Americ

  A.A.Having been refused

  B.Being refused

  C.Having refused

  D.To be refused

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