Key to Reading on page 62 - INTERMEDIATE LEVEL

b.     1. At work or when meeting someone socially for the first time
        2. You shouldn't eat smelly food or put on make-up
        3. Not on short flights
        4. When you see that a person is pregnant, old or in need
        5. Only if you have permission

c.    POSSIBLE ANSWERS:

       - kissing is not appropriate in many professional situations = you shouldn't kiss people if you meet them at work
       - It's inconsiderate to eat smelly food in a closed environment = it isn't very nice for other people if you eat smelly food in places like offices, trains, etc.
       - Don't monopolize the armrest = share the armrest - don't use it all yourself
       - It is also rude to aggressively decline the offer of a seat = if somebody offers you a seat and you don't want it, say no politely
       - Unless the host or hostess (or in a restaurant, the other diners) gives their permission for people to start = only start eating if the people who invited you, or the other people with you in a restaurant, tell you that it's OK