3.They waited _____it was dark before leaving,____they didn’

3.They waited _____it was dark before leaving,____they didn’ they didn't leave it was dark ____they were leaving ,用before还是as好 he didn't get to the airport .it was dark.用before 还是 when? Lily didn't buy that hat,_____it was very cheap. We didn't buy it,_____it was very expensive 1.they kept trying ____they knew it was hopeless 2道填空题,英语1.They _____ (reach) Si cuan before it was dark.2.We They carried on ------------ though it was dark I didn`t know __________ because it was dark. 英语翻译I didn't work for him long before leaving这句话怎么翻译 逐字逐句很难翻 We wanted to get home before dark,but it didn’t quite ____ a