W: Why do you wear a mask?
M: The air is too dirty, especially in the streets.
W: I have the same feeling.
M: Everyday when I wash my face, I find the water turns black.
W: But I don't like wearing a mask, and it's not the effective way to solve the problem.
M: I know. But what can we do? We have to go to school by bike.
发表于 2016-7-13 22:51:59