The students            busily in the classroom when Miss Brown came in to get the book she            .

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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