in his fifties 和 in the fifties 的区别,还有in fifties是什么意思，在多少年代中间加不加the

in his fifties 和 in the fifties 的区别,还有in fifties是什么意思，在多少年代中间加不加the in his fifties 和 in the fifties 的区别 求英语高手. in his one 与in his fifties对吗? in his fifties=when he was ____ _____fifty Our English teacher is in his fifties.神马意思. 翻译：He began to take up painting in his fifties. marx began to learn russian---------.A.in his fifties B.at his fifties C.at the age of fiftiesD.in the fifties 为什么 in one's fifties造句 He began to learn Chinese in his _____.A.fifty B.fiftieth C.fifties D.fifth Mark Twain became famous in his _.A fifties B fifty C fiftieth D the fiftieth he began to l e a r n chinese in his fifties 翻译 He's in his mid-fifties,well,fifty-six,to be后面是to be e_______ He became a famous writer when he was___选项：A.in his fifty B.in his fifities c.in fifty years old D.in fifties He became a famous writer when he was----------.A in his fifty B in his fiftiesC in fifty years old D in fifties选谁,为什么?谢谢啊 John began to learn English by himself in _____A the fifty B the fifies C his fifty D his fifties on one 'fiftieth和 in one's fifties 有什么区别 英语单项选择,我要答案和讲解吖38.John hit Bob ___.A.in the faceB.on his face C.in faceD.by the face42.Marx began to learn Russian ___his fifties.A.inB.atC.forD.since Once there lived an old man who was in his fiftiesOnce there lived an old man ____ was in his fifties.从句要用什么?