"This new series may be the most systematic, comprehensive and effective series of graded readers for children ever produced"
Lee and Pat can go in the car with Daddy. But what about Kim, the dog? What about Pat's cat? Lee is not happy. Lee does not like Pat's cat and he does not want it to go in the car.
All the details in the book are revealed in language (words and structure) that has been rigorously selected to be as simple and understandable as possible for young readers.