Complete the correct pronoun: “is book john’s? ” “yes, is.”

“Is  this  book John’s?”

“Yes, it is.”

Is it book Johns?
Yes it is

Например:I have a family.There are 5 members: a mother, a father, a brother, a little sister and me.My mother is a dentist in the clinics.He name is Svetlana Egorovna. She is 42. My father is a lecturer at the University.His name is Maksim Fedorov. He is 43.My brother finished school last year and now he is first year student at the Technical Institute. His name is Aleksei. He is 18. I am on the 11th form.I will finish school in a half year.I am 16. I have a little sister.Her name is Anna.She is two years old.We live in Moscow city. We are very friendly family.

I`ll tell u about why English are very popular. It isn`t a secret that English are most popular. The main reason is that English a native language in there are many countries such as: Greate Britain, USA, New Zeland, Canada, etc. English is a primary language in many spheres. There are many sites are on English. People use English to connect to each other. There many soaps, films, songs written in English language. Sometimes I think why we learn this complicated language. And I understand that it language help us communicate with people from the other side of our planet.