_____ many times, but he still doesn't know how to operate the machine properly.

试卷相关题目

• 1The country life we ______. The differences between rural and urban areas are disappearing.

  A.were used to have changed

  B.used to change

  C.used to changing

  D.were used to has changed

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• 2Nearly half a million immigrants，many of them English—speaking，______ in the country during the last quarter of the nineteenth century．

  A.have arrived

  B.had arrived

  C.arrived

  D.have been arriving

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• 3 ______ but he still can not understand it.

  A.Told many times

  B.Having been told many times

  C.He has been told many times

  D.Though he has been told many times

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• 4Can you tell me ______ ?

  A.how good is his spoken English

  B.how well his spoken English is

  C.how well he speaks English

  D.how good he can speak English

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• 5It is worth pointing out that the mishearing or misunderstanding of instructions in English, and the use of another language, in an international conversation, ______ two recent aircraft accidents.

  A.leading to

  B.to lead to

  C.led to

  D.have led to

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• 6—Who knocked at the door? —I've no ide

  A.I just pretended nobody was at home, so I didn't ask who ____ was A.he

  B.that

  C.she

  D.it

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• 7---Peter and his brother are so alike． ---Yeah, I can't tell one from ______．

  A.another

  B.other

  C.the other

  D.others

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• 8This is a picture of ______, taken from twenty years ago

  A.myself

  B.my own

  C.me

  D.my

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• 9I can't find a proper person ______ I can depend to help me.

  A.on which

  B.on whom

  C.up which

  D.up whom

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• 10--- Let's go picnicking. --- I'd love ______,but I am too busy.

  A.it

  B.you

  C.them

  D.to

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