Answer:
The students reacted with regret.
Explanation:
The teacher had a pleasant presence and provided a good school environment. For this reason, the teacher's farewell became regrettable, as the students were used to his lively and exciting presence. In addition, the teacher had a youthful air that brought positivity to the school environment and made classes lighter, understandable and exciting, managing to encourage students in a profound and impactful way.
