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一ThisreturnedChinesescholarhasbecomeoneofthetopexpertsi...

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問題詳情:

一ThisreturnedChinesescholarhasbecomeoneofthetopexpertsi...

一This returned Chinese scholar has become one of the top experts in this field.


―Yes,I know him very well ,He      in Africa with animals for ten years.


    A has worked        B、had worked      C.has been working     D.worked

【回答】

D

知識點:一般過去時及其被動式

題型:選擇題

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