My uncle has been dead for three year 的同义句,用since

My uncle has been to America (twice).---------对括号部分提问( ）（ ）（ ）（ ）your uncle been to America my uncle has been to Shenzhen __three times__（对划线部分提问） 还有一个问题 My uncle has been to Diseyland three times 对three times提问 My uncle has been living here for twenty years.(改为同义句） My uncle has been living here for twenty years (用since 改写) 这个应该怎么改? My uncle has been to Shanghai -----------空里填 （sometimes、 some times、sometime、 some time） My uncle has been a policeman()last yearsince 18 yearsfor 18 yearsin 2013 my uncle has never been abroad （）填yet 还是befor?为什么 My uncle has been dead for three year 的同义句,用since My uncle has three____(child) my uncle has joined the army since 1995这句话语法对吗?为什么不能用has been in? My uncle __the Party in 1978.He for over 19 years.a joined;has been a Party member b.joined;has joined the Party c.has joined;has been the Party d.has joined;has been in the Party 现在完成时请详解My uncle ( )abroad for years because he has no business there.A.has not been B.has not goneC.was D.is My uncle has many ducks ____his farm. My uncle got sick last month and _______ in hospital since then. 空填哪个?A.was B.had been C.has been D.would be My uncle isn't here/ She______Shanghai on business.She will be back in three daysA.has gone to B.has been to My uncle ( ) when I go to see him.a.has always workedb.will always workc.has always been workingd.is always working选哪个,为什么,谢谢~ It has been in my