What is travelling

 a train

an airport

 a plane

 a ship

a ship

 a bus

  a tram

 a spaceship

miss a plane

get a plane

 go to a plane

 catch a plane

 miss a taxi

 get out of a taxi

 catch a taxi

 go by taxi

biology

history

geography

geology

holiday

travelling

vocation

vacations

discover new things

discover people

buy old things

meet old people

before your work

after your travelling

before your travelling

at your vacations

to meet travel agent and talk to him

to get help with means of transport

to meet interesting people

to get help with planning vacations

a seller

a driver

a taxi- driver

a passenger

to remember and watch happy moments of life

to remember and watch happy moments of summer

to watch happy moments of meetings

to remember and watch sad moments of life