Science is very interesting,_ difficult.空理应填什么

Science is very interesting,_ difficult.空理应填什么 science is very difficult （）interesting.为什么填but.难道句子省略什么了?为什 this is an interesting story改复数_ _ interesting _空应该填什么 Science is difficult.Science is interesting.合并为一个句子 difficult,is,think,interesting,but,I,science连词成句 I ____ science today.It is difficult ____ interesting. 改写句子.1、I find that it is very interesting.I find _ _ _.（3空）2 the work is really very difficult,___it's very interesting. The work is really very difficult,_it's very interesting. The picture_________(paint)by Tom is very interesting.这个空怎么填 1、Science is a very interesting subject.改为感叹句 ---------- --- ‘Harry Potter’ is a very interesting science fiction movie,t