For this unit Refers to Student’s Book pages Writing headlines

Students discuss the questions in groups and then feed back to the class.
    b 
Students discuss the questions in pairs and then feed back to the class.
 Answer
2  They are advertising American newspapers: the
 International Herald Tribune
 
and the
 New York Times
.
    c 
Students discuss the questions in pairs and then feed back to the class.
 Answers
1  ‘You have to know’ about the 
New York Times
’ advantageous subscription 
conditions and ‘you have to know’ what is happening around the world.
2
 
It is referring to the world. The message of the ad is that by subscribing to the 
International Herald Tribune, 
which is easy to do, you will find it easier to make 
sense of our complex world.
3
 
Both adverts use direct statements (‘Because you have to know’, ‘It’s a 
complicated place’) to grab the reader’s attention and encourage him/her 
to read on. Both adverts also have hidden messages and include hardly any 
nouns.
  4  a