twice, the postman refused to deliver our letters unless we changed our dog. A. Being bitten B. Bitten C. Having bitten D. To be bitten 题目和参考答案——青夏教育精英家教网—

题目内容

____ twice, the postman refused to deliver our letters unless we changed our dog.

A. Being bitten B. Bitten

C. Having bitten D. To be bitten

解析:

考查分词的用法。The postman与bite之间是被动和完成的关系，所以答案为:B。

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