It is ____ to understand every single word when reading an a

It is ____ to understand every single word when reading an a it is_to understandevery single word when reading an articlr 1.（Unable）to understand a single word of Chinese,he hired an It is sometimes hard to understand that an encouraging word I'm reading ____ novel.It is ____ interesting story.A.a;an B When reading a novel,it is important to look at the politica 很难理解宇宙有多大.It is hard to understand ____ ____ the ____ is. there is ____（a/an）“o” in this word. try not to ____（翻译）every word when you learn english It's ____ to talk loudly in a reading room. it is sometimes hard to understand___ an encouraging word ca I think it is good to eat an apple every day,______?A)do I B