✔ 最佳答案
Tickets wanted= adjective.
Being wanted for by the street-people in connection with the empty seats forsaken by (1)advert.agents+travel agency+Hoteliers
(2)atheletic students
(3)volunteers
(4)security guards+tourist guides
(5)army+police officers etc.
The meaning:-
The wanted (adjective) tickets are finding a new way to sell to the street people.
(grammar)word formed from a verb,ending in -ing(=the present participle) or -ed, -en etc.(=the past participle) Here wanted is the past participle.