<span>Advertising is a means of communication with the users of a product or service. Advertisements are messages paid for by those who send them and are intended to inform or influence people who receive them, as defined by the Advertising Association of the UK.</span>
Everything is correct except for number 5, which has two prepositional phrases, "behind the door: and "for her friend."
I'm thinking Rodgers and Hammerstein, but I am not FULLY positive