"The Martians are coming! They are burning houses and killing the people of Earth. How can the people stop them?" The War of the Worlds, a Level 1 Reader, is A1 in the Common European Framework of Reference for language learning (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.