Put the sentences from exercise 3 under the right heading. 1 It's the right thing to do - a good idea. Passengers should follow the bus company rules. 2 It's the wrong thing to do - a bad idea. 3 It's necessary to do this. 4 It's not necessary. 5 Choose the correct forms to complete the web page.

1. A good idea (It's the right thing to do)

Passengers should follow the bus company rules.

2. A bad idea (It's the wrong thing to do)

...

3. It's necessary to do this

...

4. It's not necessary

...

5. Choose the correct forms to complete the web page

OCTOPUS CARDS

Octopus cards are travel cards which people buy and use to travel on public transport in Hong Kong. You have to [don't have to] have one to travel around; however, they are very useful. You shouldn't [should] think about buying a card when you arrive. They save time because you don't have to [shouldn't] stand in queues or find money to buy single journey tickets.

You can use the cards on all kinds of public transport. You can also use them in some taxis - but you shouldn't [should] always ask the taxi driver when you get into the taxi. You shouldn't [should] ask at the end of your journey.

You don't have to [have to] show your card to anyone when you travel. You just have to [should] hold your card near a machine called an Octopus reader at the beginning and end of your journey.

Octopus cards are popular with local people and visitors, and you can buy the cards at any train station. You shouldn't [don't have to] lend your card to other people and you should [shouldn't] tell the Octopus company if you lose your card.