The document is an assignment on interjections submitted by a student named Muhammad Sajid us Salam to the Linguistics Department at the Islamia University Bahawalpur. It defines interjections as words or phrases that express strong feelings such as surprise, pain, or excitement. It provides examples of common interjections like "Oh!", "Ah!", and "Ouch!" and explains how interjections are used in sentences to show emotion. The assignment also includes practice questions to test understanding of interjections.