it is difficult or interesting还是t is difficult but interesti

it is difficult or interesting还是t is difficult but interesti 英语单词连成句子?mather ,but ,is,difficult, interesting ,is,it, 请各位叔 The story ——（it）is interesting,but it's a little difficult f "发现某事很难"是"find it difficult to do" 还是"find it is difficult t difficult,is,think,interesting,but,I,science连词成句 math,i,difficult,but,think,interesting,is连词成句 it is difficult work it is difficult it is difficult at I ____ science today.It is difficult ____ interesting. parents found it is difficult/it difficult/it was difficult This maths problem is rather difficult,but it is not _____ t