having been done和had been done的区别All the tasks______ahead of time,they decided to go on holiday for a week.A.having been fulfilledB.had been fulfilled为什么选A而不是选B?

having done和having been done怎么用 如题 having been done和having done的区别rt being done,have been done和having done怎么分辨 HAVING BEEN DONE和HAVE BEEN DONE有什么区别? having been done和had been done的区别All the tasks______ahead of time,they decided to go on holiday for a week.A.having been fulfilledB.had been fulfilled为什么选A而不是选B? had been done和 had done有什么区别呢? 英语had done 和had been done区别 Being done和having been.done的区别? having being done 和have been done 有什么区别 to be done 和having been done的用法 have been done和have been doing 和having been done和having done的区别.请举例, having been done 的用法我知道having been done 和having done 不能做定语 为什么 had been doing 和had been done有什么差别 had been doing 和had been done有什么差别? what had been done had been done. My work ___,I went home.A.had been done B.done C.having done D.to be done doing having done being done having been done 造句! had been doing 和 had done的区别