you / suppose / wait for people to get off the train first
You're supposed to wait for people to...
against the law / own some kinds of dog
It's against the law to own some kinds....
polite / give your seat to an elderly person on the tube
It's polite to give your seat...
require / buy a licence to watch TV
You are required to buy a licence to watch TV.
you / not allow / smoke inside any place of work
You're not allowed to smoke...
you / not suppose / eat the fish you catch when you go fishing
You're not supposed to eat the fish you catch....
