Adults often (APPROVE) of the way teenagers behave, but this is (LOGICAL) because many of their rules don’t make any sense. It’s (RESPONSIBLE) for adults to behave badly but tell children to behave well. If adults are (HONEST) and don’t obey their own rules, then teenagers will (OBEY) rules too. We may also (AGREE) about what is acceptable behaviour . Why is it (LEGAL) for 17-year-olds to buy cigarettes, when it’s OK for 18-year-olds.