(UNESP - 2013 - 1a fase)
Considerando-se o propósito do anúncio 2, a oração que poderia fazer parte de um texto a ser incluído nesse anúncio é:
Turn on the lights when a room is not being used.
Turn on the heaters and boilers on summer days.
Turn off the lights when there is nobody in a room.
Turn on the tap before you take a bath or a shower.
Turn off the tap while brushing your teeth or shaving.