It is (such) difficult work that we can't finish it in a short time.括号部分为什么要用such 而不用 so

To master English in such a short time is too difficult for him中的句子成份问题!To master English in such a short time is too difficult for him中的in such a short time 是状语还是定语?要是状语改成To master English is too difficu It is such fine weather.改为感叹句 such ,a,it ,big, country,is.排序 so it is 和such it is的区别 It is such a fine weather .和It is such fine weather 哪个对 Such a nice day it is.还是Such a nice day is it. 英语：词汇练习,根据句意及首字母或汉语提示完成下列句子.1.-Is his h_____taking photos or collecting stamps?-Neither.It's watching TV.2.Mike,you've s_____too much time watching TV.You'd better turn it off.3.It is not as difficu Chess,which more and more people are learning to play,is quite a difficu lt game.求翻译,要通顺 It is such a difficult problem___nobody can work out. How t___________ it is to do such a dangerous thing! It is such hot weather that I will collapse. It is nice ____(own) such a beatiful room. How（）it is to make such a mistake! It's such a tough road,and maybe life is Your name is such ordinary but it affects my such as后能加what it is么,比如,sth such as what it is and how to think. 单项选择It is ___ bad weather todayA so a B such a C soD such :It is so fine weathu.和It is such fine weaher.哪个对!为啥?