3. Learn some basic words and phrases in the local language if you go to another country.
4. Respect local culture and enjoy the differences. If you travel with an open heart and mind, your journey will be more enjoyable.
5. It is silly to waste money on travelling if you really want your experience to be a 'home away from home'.
6. People are not just part of the landscape. If you want to take a photo, ask permission.
7. It's OK to snap selfies in front of historic landmarks. But don't take selfies that can endanger your life (with a bear or rhino just behind you).
1.mustn't
2.must
3.should
4.have to
5.can
6.need
7.had to
8.have to
Объяснение: