You have to have a licence to drive a car.
You don't have to have a licence to ride a bicycle.
You don't have to tip waiters and taxi drivers in Japan.
You mustn't wear shoes inside your house in Japan.
Children have togo to school on Saturday in Japan.
Children don't have to go to school on Saturday in England.
Foreigners have tocarry an ID card in Japan.
Policemen have towear a uniform.
Passengers mustn't smoke on the subway.
Gardeners don't have to wear ties.