翻译It is 5 years since that ...I keep it in my

翻译It is 5 years since that ...I keep it in my It is 5 years since that ... I keep it in my mind It is 5 years since I have lived here.It is 5 years since I It three years since I smoked.翻译 英语翻译it is 2 years since I bought the book.要求since翻译出来呀.Thank since翻译It's 5 years since I worked there.怎么翻译 修改病句：It is two years since he has begun to work in that fact 1.It is two years ＿I joined the army.A.before B.since C.that It is three years since I lived here.怎么翻译?为什么这样翻译? it's years since i __ ten years since I left my hometown .A.There are B.It is C It is ten years since I ___________ (leave) my hometown怎么填啊