–Withthefailureoftheexperiment,wehavereachedadeadend.-... 国语站 题库 2.9W 大中小设置文字大小 问题详情: –With the failure of the experiment, we have reached a dead end.--Cheer up! Many good things would never have happened if the bad events first.A. don’t happen B. didn’t happen C. hadn’t happened D. haven’t happened【回答】C知识点:动词时态与语态题型:选择题 TAG标签:#