Roald Dahl: Esio Trot. Ladybird Readers. Level 4

Ladybird Readers is an ELT graded reader series for children aged 3-11 learning English as a foreign or second language. The series includes traditional tales, popular characters, modern stories, and non-fiction.
Beautifully illustrated and carefully written by language learning experts, the series combines the best of Ladybird content with the structured language progression that will help children develop their reading, writing, speaking, listening and critical thinking skills.
The eight levels follow the Common European Framework of Reference for language learning (CEFR) and include language activities that provide preparation for the Cambridge English Pre-A1 to A2 (YLE) tests.