Task 1. Mai and John are talking about the cities of the future. Choose the correct sentences (a-e) to complete the conversation. Then practice it with a partner. 

(Mai và John đang nói về những thành phố tương lai. Chọn câu đúng (a-e) để hoàn thành cuộc trò chuyện. Sau đó thực hành nó với một người bạn.)

a. More people will move to the city. More people means more energy consumption and more carbon dioxide emissions.

b.Exactly. For example, global warming will become worse.

c.I'm writing an essay on cities in 2050.

d.Yes. But in my essay conclusion, I'll express my hope that some things could get better in 2050.

e.I'm afraid the pessimistic. Big cities nowadays face too many insoluble problems.

Mai: What are you doing, John? You look so thoughtful.

John: (1)___________________

Mai: Interesting topic, isn't it? Are you taking an optimistic or pessimistic viewpoint?

John: (2)___________________

Mai: You mean these problems can't be solved, can they?

John: (3)___________________

Mai: Why do you think so?

John: (4)___________________

Mai: I see ... It seems that you've got enough ideas for your essay, haven't you?

John: (5) ___________________