Read the following context and answer the question.
Context: Massive headache , stomach ache , puking ... So after dragging in a supervisor we said we 'd take her rooms so she could go home with minimal hassle ... In hindsight I regret it a little bit . We had 15 rooms of our own , she had 15 rooms , btu because she was ill she had n't been able to do a lot of them so we ended up with some 20 + rooms .
Question: Why did the narrator end up with extra rooms ?
Answer:


Because they volunteered to take the other supervisor 's work .