There ______ more than 200 000 overseas domestic servants working in Britain.A.is estimate

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There ______ more than 200,000 overseas domestic servants working in Britain.

A.is estimated to be

B.are estimated being

C.are estimated to be

D.is estimated being

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  • 正确答案:C
    Therebe句型题。Therebe句型可以和动词的被动语态一起使用,常用结构有:Thereis/areexpectedtobe…(预计……);Thereis/areknowntobe...(据人们所知……);Thereis/areestimatedtobe...(据估计……)。本题的真实主语为200,000overseasdomesticservants,为复数形式,故C正确。