The Extraordinary Life Of Serena Williams, a Level 1 Reader, is A1 in the CEFR framework. Short sentences contain a maximum of two clauses, introducing the past simple tense and some simple modals, adverbs and gerunds. Illustrations support the text throughout, and many titles at this level are graphic novels. Serena Williams is a famous tennis player. People across the world know her and love her. But Serena's life was not always easy, and she had to work very hard.