So difficult __ it to work out the problem that I decided to ask Tom for advice.B.did I find D.have I found 这个选b 请问是不是如果把d中的have 变成had ,d也对

The math problem is so difficult,I don't know __ A how to do Bwhat to do Cwhat to do it Dhow to doit 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 book is so dear that i can't buy it(变简单句)1：__ __ __ __ __ __ __ __ __2__ __ __ __ __ __ __ __ __ Sorry ,so it isn't __ ID card 一句英语同义句,the mats problem is so difficult that i failed to work it outthe maths problem is so difficult that i __ __ to work it out It was difficult to get a word in .Everyone __ so excitedly about the play 是用talked /was talking 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) The test was so difficult that I couldn't pass it用“too.to”改写 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) It was_______that he couldn't finish it alone. A.a job difficult so B.so difficult jobC.so difficult a job D.so a difficult答案是C.so 后面不是只能跟形容词么?为什么可以跟job这个名词,还有为什么是so difficult a job,a不可 It was _____ that she couldn't finish it by herself.A. so difficult a work B. such a difficult work C. so difficult work D. such difficlt work答案选什么?不可数名词想用So表达,该怎么说? 英语翻译It's __ __ say so 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. The math problem was so difficult that I couldn't work it out. (保持句意不变) The math problem was______ difficult for me ________ _________.