1.___ twice,the postman refused to deliver our letters unles

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1.___ twice,the postman refused to deliver our letters unless we chained our dog.
A.Being bitten B.Bitten C.Having bitten D.To be bitten
2.（） not to miss the flight at 15:20,the manager set out for the airport in a hurry.
A.Reminding B.Reminded C.To remind D.Having reminded
第一题选A,第二题选B,为什么第一个要加being,第二个不加呢?

答案错了,第一题应选B.它只表示一种被动.第二题是经理被提醒不要错过班机,也只是一种被动.

1.___ twice,the postman refused to deliver our letters unles Bitten twice,the Postman refused to deliver our letters unle ---------- twice,the postman refused to deliver our letters （）twice ,the Postman refused to deliver our letters unless ____twice,the postman refused to deliver our letters unless __twice,the postman refused to deliver our letters unless we ____twice ,the postman refused to deliver our letters unless ___twice,the postman refused to deliver our letters unless w 英语选择.-------twice ,the postman refused to deliver our letter 过去分词作状语问题1.—————— twice,the postman refused to deliver our l （）twice,the postman refused to deliever our letters unless w ___twice ,the postman refuse to deliver our letters unless w