The man having been put in prison for many years,nobody could recognize him.为什么这里的have要加ing呢

The old man ----- been to many cities.A.has B.have C.is having _____ the garden,the old man went to have a restA.Having been watered B.WateringC.Having watered D.Being watered 英译汉,并解释语法现象,the man was sent to prison for six months,having been found gulty of theft all the money_,the young man had no choice but to start hunting for a job.A had been spentB having been spent The old gentleman is said __a very rich man when he was young.A.to have been B.having been C.to be D.to have being ____,the man would not give in为什么选c呀A.Though had been failed B.Though having been failed C.Though failed D.Though being failed having affair with the other man? the man is having his ( )supper,meal _________for many years,no one could recognized him.A.Put in prisonB.The man putting in prisonC.The man having been put in prisonD.The man being put in prison __ for many years,nobody could recognize himA.Put in prison B.The man putting in prisonC.The man having been put in prisonD.The man being put in prison这题选啥啊, ___ for many years,nobody could recognize him.A.put in B.The man putting in prison C.The man having been put in prison D.The man being put in prison.这题选C吗? being还是having been?--There is a story here in the newspaper about a 110-year -old man.--oh ,i can't imagine ( )that old.A being B having been两个同样表状态吧 为什么B thanks! The man sitting opposite me smiled dreamily,as if _________something pleasant in the past.A,to rememberB,rememberedC,having been rememberedD,rememberingchoose what?and why? What are the pupils going to do?-------（ 他们在上课.）The old man ----- been to many cities.A.has B.have C.is having Having been found guilty,the man was given a severe ___ by the judge.A、service B、 sentence C、 crime D、crisis为什么选B?请翻译句子 The invention of the modern computer is one of the greatest contributions ___to man's efficiencyA.having ever been madeB.ever making C.ever made D.having ever made 帮我做道外语题 急要20.The man denied ___ any thing at the supermarket when he was questioned by the police.A) to have stolen B ) to steal C )having been stealing D) having stolen _________the young man's excellent work peformance,the manger decided to give him a promotionbeing impressed with 还是having been impressed with