While I worked in the USA= (两个空) in the USA

While I worked in the USA=( )( ) in the USA 中为什么前面while后用worked而不是working? 英语翻译Tom worked in the garden while I was sitting in the sun. While I worked in the USA= (两个空) in the USA I often visited the British Museum ______ I was staying in London.A、until B、while C、during D、th i live in where i worked对不对 I learned a lot ___ in the countryside.A.working B.while working C.when worked D.to work请问为什么 由while引导的时间状语从句!Tom (work)in the garden while I （sit）in the sun两个空应该是worked和 was sitting为什么第一个空是worked呢?work应该是延续性动词吧!为什么不用working? You and I in this moment Holding the night so close Hanging on,still unbroken While outside the th这是那首歌的歌词呀? I worked harder than anyone else in my class.=I worked harded than ___ ___ ___ in my class. -Have you __ worked in a company -Of couse.I worked in a radio company __ four years. 1.we should help those still ____ for independence.A struggle B struggling c struggled d to struggle 2.I regret ____ harder while young A not having worked B not work C not have worked D not to work 3.We ____tremendous changes in the city A glimpsed I worked in Shanghai for three years--Are you still working in Shanghai?--No,I'm working in Ningbo now.I_____in Shanghai for three yearsA.worked B.have worked C.had worked D.was working 下面句子中的空应该怎么填1：While my wife ____(work) in the kitchen,I ____ (sit) in the garden.2：When my wife ____(work) in the kitchen,I ____ (sit) in the garden.-----1：worked;was sitting 或was working;sitted 或则was working;was s i worked very hard in this s____.i think i could do b_____ than last year I ( )in the factory for over one year A.work B.worked C.have worked D.was working 英语语法：in a while 和 for a while 的区别是什么 I haven't seen him in(for)a while. 英语翻译have i worked? I worked hard