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    I into robots and used to make mobile phones as well as help with medical operations. A. have put B. have been put C. had put D. had been put 【查看更多】

     

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    I        into robots and used to make mobile phones as well as help with medical operations.

       A. have put    B. have been put      C. had put        D. had been put

     

     

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    I        into robots and used to make mobile phones as well as help with medical operations.


    1. A.
      have put
    2. B.
      have been put
    3. C.
      had put
    4. D.
      had been put

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    I        into robots and used to make mobile phones as well as help with medical operations.

    A．have putB．have been putC．had putD．had been put

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    Since the 1970s 　　1　　 have been found for me．I have become very important in communication, 　　2　　．I have also been put into robots and used to make mobile phones as well as help with medical operations．I have even been put into space rockets and sent to explore the Moon and Mars．Anyhow, my goal is to provide human with a life of high quality．I am now truly 　　3　　 that I am a devoted friend and helper of the human race!

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