来自胡孔法的问题
Sixtypercentofthework_________.A.havebeendoneB.hadbeendoneC.hasbeendoneD.hasdone为什么选B而不选C?
Sixtypercentofthework_________.
A.havebeendoneB.hadbeendoneC.
hasbeendoneD.hasdone
为什么选B而不选C?


Sixtypercentofthework_________.A.havebeendoneB.hadbeendoneC.hasbeendoneD.hasdone为什么选B而不选C?
Sixtypercentofthework_________.
A.havebeendoneB.hadbeendoneC.
hasbeendoneD.hasdone
为什么选B而不选C?
hasbeendone单指完成时而根据此句含义已经做完了百分之60应该属于过去完成时hadbeendone