It is difficult to tell one from the other ,when standing side by side后面when standing side by side 是什么用法类似还有you should take a map when travelling,when travelling是什么用法,什么时候用

parents found it is difficult/it difficult/it was difficult to teach children.说明选择原因 how difficult is it to save money? is it difficult to learn Japanese? Chinese is _____(difficult) for Dave to learn.He can't understand it. i can't speak German .so it is very difficult to make myself u__in Germany it is difficult to make ends meet but I don't lose hope.翻译 The question _ too _ for me _. A. isn't;difficult;to answer it B.is;difficult;to answer it 写出同义句 the problem is too difficult for ue to solve.the problem is difficult we can,t solve it.the problem easy for us to solve. What is the sky This question is very difficult to answer ,isn't it?The sky is space where there Such a difficult problem__that I don't know what to do with it.A.it is B.was it C.is it D.it was T____ it is very difficult for me to learn maths well,I won't give it up. The math problem is too difficult for him to work out.(写出同义句）The math problem is _____ difficult _____ he can't work it out. 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 to do sth对还是it difficult to do sth对 it difficult to do sth 和it is difficult to do sth 的区别 是it is difficult to me to do sth还是it is difficult to me for sth还是it is difficult to me to sth it is difficult to understand.中的it是什么词 it is difficult to do /doingit is difficult 后接to do 还是doing