题目内容

7.(2015广东广州天河综合测试        ) 一Where are your dogs,Mickey?

—They        to the pet center last week.

   A. is sent   B. was sent

   C. are sent   D. were sent 

7.D last week为过去的具体时间状语,谓语动词应用一般过去时,排除A、C两项;they代指dogs ,与谓语动词send构成被动关系。故用被动语态。

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