A problem in learning English,help!有时候会看见名词后出现形容词,有时又没有for example:Corporation Limited(有限公司) Ocean blueon the other hand:white people,enterprising corporation

到底是have a problem in doing sth还是have problem in doing sth为什么problem不加s 1、as time goes buy ,i strat to realize that —— can last forever in the changing world A something B everything C anything D nothing2、Over the last two years ,i ——that no matter what happens ,we are all in this togetherA learn B am learnin 英语翻译Just hold out your hands and give the most you can.And I swear to you you'll feel a better man.And the gift is what you get by givin' more than you receive.And you're learnin' fast that maybe this is how you'll be happy.'Cause in takin' e think of a problem in a postive way I have a problem in doing something对吗 Air pollution is now a serious problem in China 英译汉 翻译“Hunger is a very serious problem in many place.” Hunger is a serious problem in many places是什么意思 have a problem in dealing with business 翻译 Can you work out the problem in a new w_____ getting one's teeth in to a problem lie 和lies in用法Where does the problem lie?The problem lies in a badly-polluted environment.这里为什么不用Where does the problem lies in 英语翻译A semi-infinite programming problem is an optimization problem in which finitely many variables appear in infinitely many constraints. Where's Mike?He is working _____ physics A in;problem B out;problem C in；problems D on;problems ( ) what way did he work out the physics A.In; question B.In; problem C.By question,D By,problem _____what way did you work out the maths____?A,In problem B,In question C By problem DBy question The Popultion Problem in an environmental problem in