13 Complete the sentences with the correct form of the words in brackets.
1 It is apparently possible to stop cold
(call) by contacting your phone service.
2 Product
(place) is becoming a very
popular form of advertising in films.
3 You can see signs of sports
(sponsor)
every time you watch a football match or other big
event.
4 Most
(market) campaigns involve TV
advertising and offer free gifts and special discounts.
5 I know a lot of people who buy certain things because
of celebrity
(endorse).
6 The Internet has allowed techniques such as
(virus) advertising to become very
effective.