______ is Old English,the book is too difficult to understan

______ is Old English,the book is too difficult to understan (written) in Old English,the book is too difficult to unders English is too difficult. English is difficult ______. This book is ___ to be too difficult to___ to与for区别:The book is difficult to me.The book is difficult f --the problem is too difficult ,can you show me ______ ----- The problem is too difficult for him ______ This English book is too difficult.I can't ________(read) it 改错(对的不动,错的指出并改正）：1.This book is too difficult for the boy to The old man is too old to word.(同义句) English is difficult to learn