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    An average of 200 letters a week received by the newspaper’s offer. Such the case with us at present. A. are; is B. has been; has been C. have been; is D. is; are 【查看更多】

     

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    An average of 200 letters a week ____ received by the newspaper’s offer. Such _____ the case with us at present.

    A. are; is　　 B. has been; has been　 C. have been; is　　 D. is; are

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