It is difficult _her _the work in half an hour如果是for和to的话,为什么It is nice of her to give me the chance中又要填of呢?

It is difficult _her _the work in half an hour如果是for和to的话,为什么It is nice of her to give me the chance中又要填of呢? it is difficult it is difficult at Everythingt is difficult before it is parents found it is difficult/it difficult/it was difficult to teach children.说明选择原因 Greek is a language I found__to learn.A.is difficult B.it is difficult C.it difficult D.difficult. It is difficult () out this maths problem it is very difficult for me. how difficult is it to save money? it is difficult doing.sth造句 it is difficult a book for us is it difficult to learn Japanese? it is difficult for me.为什么要用for?是it is too difficult for me. difficult is not difficult it is difficult to understand.中的it是什么词 How is the English t___today It is a little difficult Math is different ______Chinese.It is a little difficult ____ I find it difficult to learn English well.这里,为什么不是it is difficult?求解!