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    --------Oh, your country is not what it use to be when I visited it twenty years ago.. -------Yes. Great changes, especially in the eastern areas, since then. A. took place B. have been taken place C. have taken place D. has been taken place 【查看更多】

     

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    --------Oh, your country is not what it use to be when I visited it twenty years ago..
        -------Yes. Great changes, especially in the eastern areas, ________since then.
       A. took place      B. have been taken place      C. have taken place     D. has been taken place

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