"I will call you as soon as they are healthy enough to receive guests."
"But ...." the kids tried to object.
Liam interrupted.
"There are no buts. You are in the middle of a lesson. You are to continue with it until it's time to end it. I will let you know how the twins are doing in the meantime. And focus on your lesson!" His voice was stern and left little room for argument.
The teacher rather wished to have that kind of authority, that kind of voice that made people listen to her.
The boys sat down but very reluctantly, and Liam left.
The teacher sensed that the boys weren't very interested in the lesson anymore, but she understood. It was something important, but they focused as much as they could.