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    ---- Tony, you look puzzled. Have you understood me ? ---- I’m sorry. 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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    ---- Tony, you look puzzled. Have you understood me ????

    ?? ---- I’m sorry. I _____ another problem just now.

    A. thought of????????????????? B. am thinking of??

    C. had thought of?????????????? D. was thinking of

     

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