A: ______！
B: So it is. The wind is blowing strongly with lots of sand. I couldn’t see anything, and my face hurt while I was walking down the street just now.
A: I’m sorry to hear that. But ______?
B: People have cut down too many trees. As a result, lots of rich land has changed into desert.
A: That’s too bad, but______?
B: Trees can stop the wind from blowing the earth away. And a lot of water can be saved by forests. They can also prevent the water from washing the earth away.