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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科目：高中英語 來源： 題型：

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

　 A. whom 　 B. who

　 C. the one 　 D. he

 

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