Questions 1-10

Useful language: adverbs of degree- cautious, 
qualifying language
1  a  tend to
b  In the main
c usually
   These expressions are used because all these 
assertions are contentious or very difficult to prove 
and so the language needs to be cautious.
2  Cruise holidays are popular, in the main, with older 
tourists. / Cruise holidays are popular with older 
tourists, in the main.
  Usually, the economy is strongly influenced by 
consumer confidence.
3  a   Usually children attend school… / Children 
usually attend school…
b   In the main non-fiction titles are… / Non-fiction 
titles are in the main…