Giúp mình câu này vơi mình cảm ơn     

Complete the interview with the cards.
Interviewer: Overcrowded places have a lot of problems, (1)____________?
Guest speaker: Sure. Traffic jams, pollution, noise
Interviewer: Traffic congestion is the most serious problem, (2) _____________?
Guest: Not really. We can see homeless people in many places in big cities, (3) _____________? The city cannot build enough houses for all the people.
Reporter: So they can live anywhere, under bridges, abandoned houses...
Guest speaker: Yes, and some of them turn out to be criminals.
Interviewer: This housing shortage is not easy to solve, (4)_________?
Guest speaker: No, it's not.