1. The document lists the group members for a project: Diana Citra Z, Faizah Hidayati Amhar, Metta Nurfitri Asmala, Nadiah Surya Nahari, Salsabila Daradeyana, and Tinne Okta Triani Putri. 2. It provides examples of using simple past tense to describe events that happened in the past at a specific time versus using the present perfect tense to describe an action that is still ongoing or has relevance to the present. 3. The key differences between simple past and present perfect tenses are when they are used to discuss an action's completion status and timeframe.