We haven't known ____ there is life on Mars.A.that B.if C.what D.and

I ___ him very well,but I haven't seen him this week.为什么用know不用had known We haven't seen each other for a long time.改为同义句.___ ___ ___ ___. We haven't known ____ there is life on Mars.A.that B.if C.what D.and We haven't known each other for a long time since my good friend _____(leave)here. We haven't __each other for a long time.A.known B.recognized C.realized D.got to known问什么选A及翻译. We haven't decide ___ to go to Beijing(whether,if) We haven’t ___ time to catch the train now.A .adequate B.sufficient C.enough D.muc 4.We haven’t ___ time to catch the train now.A .adequate B.sufficient C.enough D.much We haven’t been able to find out the ___ of the rumour.A. sourceB. causeC. originD. reason We haven‘t got any milk () coffee. WE HAVEN'T A GOOD TIME 改错 We haven’t finished our homework ______. We haven't got much time.We_____hurry haven't we ever?怎么翻译 Sorry,I'mafraid we haven't() We haven't finished yet.We haven't done yet .是否意思一样? Although it is awfully cold this winter,we have kept physical training without interruption,___?A isn't it B haven't it 英语：同义句转换We haven't met for a long time___ ___ ___ ___since we met last time.If we beat them in the match,we will be the best.if we ___ ___ ___,we will be the___.You should return the book to the library on time.You should___the bo