听力原文：You' ve probably noticed the stains on the ceiling and the strong smell coming fr

om the bathrooms. This is because of the problem we have had with the pipes in this building. Repair people will be coming in on Monday to fix the problem. While they are here, we may have to vacate the building for safety reasons. This means that those of you who can will be asked to work from home. Those who cannot work from home will be transferred to our office on the other side of the city. The work should take about two days to complete. We apologize for any inconvenience this may cause.

What kind of work needs to done？

A．Electrical

B．Structural

C．Garden

D．Plumbing