The easiest way that I could remember those things are past means its behind you, present is what your doing now, and imperfect tense is kinda like the past one. I hope that I help you.
Bonjour,
1. Tu "fermeras" la porte avant de partir.
2. On "arrivera" le 15 octobre.
3. Nous dînerons à la crêperie la Crémaillère.
Jouer means playing / joue means play
Faire means doing / fais means do
Hello
2. Ce sont les papiers des étudiants
Byye