The other one is called PSAs，which are made to use 6.attractive and clever language to serve the public.They 7.aim to teach us and help us lead better lives.There are even PSAs to teach us how to live healthy lives.Our government has been using them to 8.educate people for many years.

　　In my 9.opinion，when it comes to advertisement，we must all use our 10.intelligence and not be a slave to them.