The key answer of exercise 2

a)

1. Everybody who visits this country needs a visa. It's essential.
2. For local food, it's better to try the port area. There's nowhere good to eat near the museum.
3. If you need somewhere to change money, there are banks in the main square.
4. It's a good idea for everyone to buy travel insurance. The doctors are very expensive.
5. Don't take anything valuable with you when you visit the market. Leave your passport in the hotel.
6. It's OK to try the local food, but don't eat anything uncooked.

b) -