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    When first to play the piano in his childhood, the musician didn’t show any gift. A. teaching B. teach C. taught D. being taught 【查看更多】

     

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    When first ______to Britain, tea was not so popular like today

    .  A. introducing   B. introduced   C. being introduced.  D. introduce

     

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    When first______to the market,these products enjoyed great success.

    A.introducing                      B.introduced

    C.introduce                          D.being introduced

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    When first ______ to the market, these new products in their company enjoyed a great success.

    A. Introducing       B.introduced       C.to introduce     D. being introduced

     

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    When first __________ to the market, the computer software was not a success due to its complexity in operation.

    A. introducing                              B. being introduced

    C. introduced                               D. to be introduced

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    When first____ to the market, these products enjoyed great success.

    A．being introduced   B．having introduced   C．introduced        D．introducing

     

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