世界上第一难猜的谜语:The books is written on ____ easy English___ beginners can understand.

The books is written on ____ easy English___ beginners can understand. 问题：___ is quite natural, a beginner can't read the books written in English very quickly to see yourself is worth all the books of travel to see yourself is worth all the books of travel It is easy to find the students ___ English books in the school garden. The writer has written quite a few books now,___his teachers and parents didn't expect. --Excuse me.Is this seat taken?--____.The man got books left a few minutes ago cooking the books 什么意思 1."The city of stone in China" 2."She is in my black books" the article is written in such easy english ___all of us can read it.