Answer:
1: Tu
2: Vous
3: Vous
4: Tu
5: Vous
6: Vous
7: Tu
8: Tu
9: Vous
10: Vous
11. Vous
12: Vous
Explanation: Use Tu when referring to friends, students of the same age, kids, family, colleagues, pets, and when talking to someone younger than you
Use Vous when you don't know someone's age, a client, waiter, professor, people older than you, for work, superiors like bosses