练习册

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    Robert is said abroad, but I don't know what country he studied in. A. to have studied B. to study C. to be studying D. to have been studying [解析] 所提供的情境what country he studied in表明Robert过去曾在某个国家学习过.所以要填to have studied.动词不定式的完成式表示过去发生的事.答案为A. 【查看更多】

     

    题目列表(包括答案和解析)

    Robert is said _______ abroad, but I don’t know what country he studied in.

    A. to have studied  B. to study

    C. to be studying    D. to have been studying

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    Robert is said _______ abroad, but I don’t know what country he studied in.

    A. to have studied                               B. to study

    C. to be studying                                           D. to have been studying

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    Robert is said _______ abroad, but I don’t know what country he studied in.

    A. to have studied  B. to study

    C. to be studying    D. to have been studying

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    Robert is said _______ abroad, but I don’t know what country he studied in.

    A. to have studied  B. to study  C. to be studying      D. to have been studying

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    Robert is said________ abroad, but I don’t know what country he studied in.

    A．to have studied B．to study
    C．to be studying D．to be studied

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