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    This is eraser and that is pencil sharpener. A. a; a B. an; a C. an; an D. a, an 【查看更多】

     

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     This is      eraser and that is       pencil sharpener.

    A. a；a      B. an；a             C. an；an D. a；an

     

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    This is     eraser and that is      pencil sharpener.

    A．a；a B．an；a C．an；an D．a；an

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    This is ________ eraser and that is ________ pencil sharpener．

    [　　]

    A．a; a

    B．an; a

    C．an; an

    D．a; an

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