The key answer of exercise 6

b)

1. c
2. e
3. b
4. d
5. a

It pays to be honest → What goes around comes around - the man's generosity to the elderly woman was returned (in this case in an unusually coincidental way).

c)

1. when in Rome do as the Romans do
2. Once bitten, twice shy.
3. What goes around comes around.
4. nothing ventured, nothing gained
5. every cloud has a silver lining