30.It is well know that it ____ stamina to run a marathon.A.taken B.has taken C.takes D.took怎么选?为什么?

Well,I don't quite know what to say .the point is ,I can't spare it You should know that it is important ( ) (learn) English well I don't know _____,doctor.Well,you just have a cI don't know _____,doctor.Well,you just have a cold.It's nothing serious.A what is wrong with meB what the matter is with me 英语翻译It's also important to know,as well as you can,what it is that you don't know,and asking questions is the way.as well as you can 是尽你所能的意思吗? --How is your English?--___a.I don't know b.Don't ask me c.Thanks for asking me d.It goes well Wow,well,well,I know who it is .翻译成中文 Well,don't know so -帮我猜一个英语谜语 -It is the shortest and the longest.It never comes but always goes.If you don't use it well,you will do nothing.what is it,do you know? 选择题英语How is it going ,John?How is it going ,John?______.A.It's fine today B.It's Sunday todayC.Everything goes well,thanks D.I don;t know it doesn't matter__you don't know him well为什么用if而不是that It doesn't matter if you don't know him well.if引导的是什么从句 I don't know how to learn it well(改为同义句）I don't know ___ ___ ___learn it well I really don't know how I can do it well 改同义句 I really don't know how ___ ___ it well T______he is young ,he can't do it well. It is well [know]that China is a developing country,填空为什么 it is well-know that automobile is the major industy in japan 可数还是不可数 I don't know what to say well,maybe it's the man I _ don't know what it is