Use the sentences in the box to complete the conversation

01 Đề bài:

2. Use the sentences in the box to complete the conversation. Then practise it in pairs.

(Sử dụng các câu trong khung để hoàn thành đoạn hội thoại. Sau đó thực hành nó theo cặp)

A. First, deforestation leads to more CO2 in the air

B. I think it’s cutting down or burning forests

C.This also makes the earth even warmer

D. Well, there are two main reasons

Mark: Mai, which human activity is the main cause of global warming?

Mai: (1) __________________________________ .

Mark: Why do you think so?

Mai: (2) ___________________________. (3) ___________________________. Trees use CO2 to grow, so when they are cut down or burnt, CO2 in the air increases.

Mark: I see.

Mai: (4) ___________________________. Forests store carbon in the trees and soil, and help reduce the global temperature. That’s why I think cutting down or burning forests is the most serious problem.

02 Bài giải: