TRAVELLING

1. rules

1.1. must

1.1.1. mustn't

1.1.1.1. run on the bus

1.1.1.2. throw litter

1.1.1.3. drink water

1.2. should

1.2.1. shouldn't

1.2.1.1. listen to loud music

2. entertainment

2.1. look at the clouds

2.2. read a book

2.3. watch a video

2.4. do crosswords

2.5. look throught the window

2.6. see whales and dolphins

2.7. listen to music

2.8. sleep

2.9. stop at any place

2.10. buy food

3. COUNTRIES

3.1. the UK

3.1.1. British

3.2. the USA

3.2.1. American

3.3. Canada

3.4. India

3.4.1. Indian

3.5. Australia

3.5.1. Australian

4. transport

4.1. by bicycle

4.2. by motorbike

4.3. by car

4.4. by train

4.5. by plain

4.6. by hot-air balloon

4.7. by bus

4.8. by helicopter

4.9. by boat

4.10. by ship

5. comparisson

5.1. faster

5.1.1. thq fastest

5.2. safer

5.2.1. the safest

5.3. cheaper

5.3.1. the cheapest

5.4. more comfortable

5.4.1. the most comfortable

5.5. more interesting

5.5.1. the most interesting