They haven’t succeeded _____ working out the problem

Finally they succeeded -------- the problem she s() in working out the problem Li lei tried hard _____(work) out the problem.能不能用working i don't have any problems working out the match problem 改为同义 the problem isn't easy________ A.working out B,to be worked They haven't paid for their tickets,have they?-----_____.The 【72698】 They succeeded _____ o That is the new ( ) of working out the problem. 几道英语填空1、I haven't c_____ out the refrigerater yet.2、They're 求分析这个句子的成分the problem lie in the fact that they haven`t gras 选What's the matter _____ they still haven't answered the tel 该选What's the matter _____ they still haven't answered the te