Is it difficult____(finish)____(write)the article in one day?

Is it difficult____(finish)____(write)the article in one day? to understand the problem is very difficult.(用it作为形式主语）—— ——very difficult____ underst For the students in the villages,it's difficult____ to school.A.getB.getsC.to getD.getting快 To tell me one twin from the other is very difficult.同义句 ______very difficult____ _____one twinfrom the other. I don't like math because it's too difficult.(对划线部分提问）划线部分：because it's too difficult____ ____ you like math？ I tried very hard to explain my plan,but I found it difficult____.A.to make myself understandingBto make myself understoodCto understand myself Dmake myself understand To finish the work is very difficult.改为同义句 ———— ————— very difficult____ ______the work. i found the question difficult____(anwser) It is(). it is it is is it it is Is it it is It is it is it is