That was difficult to build that railroad at that time.单句改错

The test was so difficult that I couldn't pass it用“too.to”改写 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 ________ _________. The problem was so difficult that we couldn't work it out easily同义句We___ _____working out the problem. It was _____ that he couldn't finish it by himself.It was _____ that he couldn’t finish it by himself.A.so difficult a work B.such a difficult workC.so difficult work D.such difficult work选D　但是错在哪?C错在哪里? It was ()that Mary couldn't do it alone.Aso difficult a work BIt was ()that Mary couldn't do it alone.A so difficult a work B a so difficult job C such a difficult job D such a difficultwork我选的是C,他们都选的D啊.为什么啊. 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? Another thing that I found very difficult was English gramarvery difficult为什么要放在那里?如何理解very difficult? HIs lecture was difficult and I didn't know -------he said meant in his lecture.A.that B.what C.tHIs lecture was difficult and I didn't know -------he said meant in his lecture.A.that B.what C.that that D.what waht 请问为什么选D HIs lecture was difficult and I didn't know -------he said meant in his lecture.A.that B.what C.tHIs lecture was difficult and I didn't know -------he said meant in his lecture.A.that B.what C.that that D.what waht that might be difficult.might为什么等于can't be That was difficult to build that railroad at that time.单句改错 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 so that 不是加形容词 such that 加名词 为什么是C Miss Gao asked a question,but it was ______ that nobody could answer it.A.very difficult B.too difficult C.difficult enough D.so difficult It was （ ）that he could not finish it by himself.A、such difficult work B、so difficult a workC、such a difficult workD、so difficult work This problem was so difficult they couldn't solve them.改写句子This problem was ( ) difficult ( ) ( ) ( ) solve. 英语翻译lazy.I wasn't surprised to find that my worst report was from my science teacher.it's just that i find science really difficult.that‘s about all the news i have for now.send their love. I don't know is right or wrong.Everything is too difficult for me.I really afraid my heart hurts again.How should I do?I can't lost that person again and again.I was very tired. 几道英语基础题It was ______ that I couldn't finish it on time.A.so difficult B.such a difficultC.so difficult a D.such difficult完成句子你听说过三峡工程吗?_____ _____ _____ _____ _____ the Three Gorges Project?单句改错（None