The key answer of exercise 3

a)

• The key question is ...
• The fact is ...
• One example of this is ...
• Some might say ...
• Perhaps
• might
• generally

b)

• State your position → the main point is that; the fundamental issue is ...
• give examples or use lists to illustrate a point → for instance
• anticipate counter-arguments → a common misconception is that ...; it has been put forward that ... (but ...)
• use hedging devices → arguably; to a certain extent.