Read the following context and answer the question.
Context: When I got back from school we installed the 2 optical cables in the tubes who are in the wall . We were lucky and did n't have to remove the Gyproc wall . So now he can finally close all the holes and start the wallpaper and painting . Now there 's one problem , before he can start the wallpaper he needs my electricity cable of the tv .
Question: What has to happen before wallpapering the wall ?
Answer:


Electricity cable to the TV must be placed on the wall .