1
full of people moving in a busy way
2
synonym of contaminated
3
in a very bad condition
4
a ______ flight is one that is within the same country
5
synonym of isolated
6
_____ ticket is one that you can use repeatedly during a certain period, without having to pay each time
7
an _____ ticket is a travel document without a certain return date, but with a fixed validity period. It is used in transportation.
