It was years since I ___________ (enjoy) myself so much.填什么,为什么

It was ten years since I left my hometown.改错 it's years since i it is years since i saw him（追加）it is years since i saw him为什么不说it is years since i has seen him而it was years since i had seen him 却可以 英语翻译还有这句 It'It's three years since I was a solder.It'It's three years since I joined the army It's 3 years since I saw him last time.能不能换成it was... It was years since I ___________ (enjoy) myself so much.填什么,为什么 it was almost six years since I bagan to learn English.(改错)请说明原因 It ___ten years since i taught in the schoolA is B was C has D is It __four years since i joined the army.这里的is,为什么不用was呢? it is four years since I joined the army.这里的is,为什么不用was呢? It has been many years since I was a big cheese. It three years since I smoked.翻译 it was years before i had seen her 和it wasyears since i had seen her是相等吗 It was years since i had seen her.此处为什么是had seen ,可否用saw代替.句型不是It+is/was+时段+since+过去时? it was i met miss white in hangzhou A:three years before B:three years ago that C:three years whenD:three years ago since I still remember how many years ago it was that I last meet her.中的 ago 可否去掉?为什么?I still rememeber how many years it was since I last met her．可以去掉it was It's three years since he was married .的翻译 It is three years since she was in the