This document presents an English grammar activity for high school students about the present simple tense. The purpose is to help students understand and practice the present simple tense through fill-in-the-blank exercises and forming interrogative sentences. The activity provides explanations of the present simple tense usages, forms in the affirmative, interrogative and negative, and spelling rules for third person singular verbs. Students are asked to fill in verbs in affirmative sentences and change given sentences to interrogative form to review the concepts covered in class.