twice, the postman refused to deliver our letters unless we chained our dog. (2009北京卷)A.

发布时间:2020-08-17 14:05:54

     twice, the postman refused to deliver our letters unless we chained our dog. (2009北京卷)
A. Being bitten
B. Bitten
C. Having bitten
D. To be bitten

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A. Being bitten
(答案→)B. Bitten
C. Having bitten
D. To be bitten
解析:根据句意,句子主语the postman与动词bite之间为被动关系,所以首先可排除选项C;再根据句意(尤其是注意关键词twice)可知,表示正在进行选项A和表示将要发生的选项D均不合题意。全句意为:邮递员被狗咬了两次之后要我们把狗拴起来,不然就不给我们送信了。
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