The students _______ busily when Miss Brown went to get a book she _______ in the office.

    A. had written, left   B. were writing, has left   C. had written, had left　      D. were writing, had left

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On the street I saw a studen _____ I thought was English.

　 A. whom 　 B. who

　 C. the one 　 D. he

 

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