The key answer of exercise 5

a)

• never
• hardly ever
• rarely
• occasionally / once in a while
• sometimes
• often
• usually
• always

b)

Text A

• they sometimes get angry with the people they rescue
• Climbers always risk their lives
• they usually fly in much worse weather conditions
• often, the people they rescue are frightened
• occasionally, they get a surprise
• The people they rescue ... hardly ever say thank you

Text B

• The motoboys usually earn just $450
• they often work under time pressure
• Once in a while, they try to change the traffic laws

Text C

• it is sometimes easy to forget
• Life as a jockey is rarely safe and it usually involves a few broken bones
• Once in a while jockeys even die
• he never worries