A: Hi, Wang Fei. You look very unhappy. ?
B: I failed the math exam yesterday.
A: . But you don't need to worry about it all the time.
B: I really don't know how to learn math well.?
A: Maybe you can join our math group, so that we can help each other.
B: Sounds great.?
A: Tomorrow, if you like it. I'm sure you will be better and better. Now, don't be sad!
B: Thank you so much. .
A: That's great!
