Which of these books in English has easy-to-understand language?

English is not my first language, and I wanted to buy an English book with easy language so I could practice.

My options are: Wuthering Heights.
Arabian Nights.
Treasure Island.
The Wind in the Willows.
Great Expectations.
Aesop's Fables.
Fairy Tales (Brothers Grimm).
A Tale of Two Cities.
Anne of Green Gables.