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    23．-Alice , you look puzzled . Have you understood it ? -Yes . I another problem just now . A．have thought of B．am thinking of C．had thought of D．was thinking of 【查看更多】

     

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    — Alice, you look puzzled. Have you understood it?
    — Yes, I _____ another problem just now.

    [     ]

    A. have thought of
    B. thought of
    C. was thinking of
    D. had thought of

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    —Alice, you look puzzled. Have you understood it?

    —Yes, I         another problem just now.

    A. have thought of      B. am thinking of

    C. had thought of       D. was thinking of

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    ―Alice, you look puzzled. Have you understood it?

    ―Yes, I          another problem just now.

           A．have thought of    B．thought of           C．was thinking of    D．had thought of

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    —Alice, you look puzzled. Have you understood it?

    —Yes, I          another problem just now.

    A．have thought of           B．thought of           C．was thinking of             D．had thought of

    查看答案和解析>>

     —Alice, you look puzzled. Have you understood it?

    —Yes, I         another problem just now.

    A. have thought of      B. am thinking of

    C. had thought of       D. was thinking of

     

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