Mina and Toru they had found an abandoned building while doing some shopping, and so here they were, class 1-A in front of an abandoned building... And maybe haunted

Denki: "Woah... It really looks spooky from the outside..."

Denki shuddered at the sight of the building from the outside, then Tenya began his speech while moving his hands like a robot

Tenya: "I insist, we shouldn't be here and as your Class representative I must warn you about things like this, Professor Aizawa will be angry if-"