( )the project,they have to stay there for another two weeks.A.not completingB.not completed

问题描述:

( )the project,they have to stay there for another two weeks.A.not completingB.not completed
C.not having completedD.having not completed 求详解

C 从过去到现在在到将来 用完成时态 而他的否定时态则在前面加否定词not