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    the most useful invention 【查看更多】

     

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    What _____ is the most useful invention?

    [     ]

    A. you think
    B. do you think
    C. you think

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    —What’s ______ most useful invention in the 20th century?

                —______ computer, I think.

    A. the, A                             B. a, A                        C. the, The                 D. /, The

     

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    —What’s _____most useful invention in the 20th century?

      —_____ computer, I think.

    A. the, A          B. a, A            C. the, The        D. /, The

     

     

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    —What’s _____most useful invention in the 20th century?
    —_____ computer, I think.
    A．the, A B．a, A C．the, TheD．/, The

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    —What’s ______ most useful invention in the 20th century?
    —______ computer, I think.
    A．the, A B．a, A C．the, TheD．/, The

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