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    25．A certain number of tourists complaining about the high accommodation price during the last month. A．is B．are C．has been D．have been 【查看更多】

     

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    A certain number of tourists _________ complaining about the high accommodation price during the last month.

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

     

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