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Not since Nelson Mandela’s presidency a national police commissioner leaves

来源 :焚题库 2022-03-21

单选题Not since Nelson Mandela’s presidency a national police commissioner leaves office without being charged with corruption or misconduct.
 

A.has a national police commissioner left

B.a national police commissioner has left

C.a national police commissioner left

D.is a national police commissioner left

参考答案:A

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答案解析:倒装结构。本题中否定词not放在句首,因此句子要部分倒装,由于not后面接了since词组,所以谓语动词要用完成时态。

 

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