It is so difficult that we can't climb up the mountain.什么意思?或者说这句是错的?

It is _question that i can't work it out.A.a so difficult B.so a difficult C.so difficult a 请帮我 The question is so difficult that I can't answer it(改为同义句) the question is so difficult that we can't answer it.(同义句) i can't speak German .so it is very difficult to make myself u__in Germany English is so difficult that I can't learn it well.(改为简单句) 句型转换Theproblem is so difficult.Icon't work it out.The problem is _difficult _me___.改为同义句 This piece of music is so difficult that I can't play it.(保持原意)This piece of music is _______ difficult __________ ________ ________ play. The problem is so difficult that I can't work it out.同义句The problem is _______ _______ difficult for me ______ work out. This problem is so difficult that we can't work it out.(保持句意不变）This problem is ____ difficult ____ us _____ work out. it is so difficult for sb to do sth,difficult用so形容对吗? The work is so difficult that he can't finish it in under a week =The work is so difficult that he can't finish it in 【】【】one week 英语语法 The work is so difficult that he can't finish it in under a weekThe work is so difficult that he can't finish it in ＿ ＿ one week (填词） It is so difficult that we can't climb up the mountain.什么意思?或者说这句是错的? The work is so difficult.I don't know____ A,how to doB.how to do it 选哪个,为什么 It is( )difficult work that we can't finish it in a short time .A.so B.such C.so a D.such a so...that从句中的it放哪里The problem is so difficult that we couldn't work it out为什么放当中 The question is so difficult that nobody can answer it The question is so difficult that nobody can answer it