This document contains reinforcement activities for English language learners. It includes exercises on topics like possessive pronouns, subject pronouns, verbs like "be" and "have", prepositions, interrogative pronouns, and the present simple tense. The activities are designed to strengthen students' knowledge of basic English grammar through tasks like filling in tables, writing sentences, asking and answering questions, and correcting sentences. The document was created by an English teacher, Mercedes González Delgado, and takes material from the textbook English Plus by Oxford University Press.