El muchacho is the answer, hope this helps :)
1. a; nosotros/as
2.b; Tú
3.b; incorrect
fumar en el aero aeropuerto es privado
or if u need it translated
smoking in the airport
The answer is A. D should have a 's' on cubano. So yeah. its A
There is no answer because it does no affect a city :P
