A、Joining the tennis club in school. B、Asking his mother about Adidas shoes. C、Discussing with his mother about buying Adidas sh

M: Mum!
W: Yes? What’s the matter?
M: I’m wondering if I should buy a pair of tennis shoes. I’m going to join the tennis club in school.
W: Why not? It’s good that you finally play sports.
M: But I’d like to have Adidas.
W: Adidas? It’s expensive. It’s for the Chicago Bulls!
M: No. All the guys in the school tennis team are wearing Adidas, boys, as well as girls. Here, Mum, is an ad about Adidas. Can I read it to you?
W: Go ahead.
M: "Over forty years ago, Adidas gave birth to a new idea in sports shoes. And the people who wear our shoes have been running and winning ever since. In fact, Adidas has helped them set over 400 world records in track and field alone."
W: Nonsense! The players have to go through a lot of hard training and practice. It’s nothing to do with the shoes. They may be comfortable, but...
M: You’re right, Mum. The ad goes on to say "You are born to run. And we were born to HELP YOU DO IT BETTER."
W: Hmm. It may be good for running, but you don’t run.
M: Listen, "Maybe that’s why more and more football, soccer, basketball and tennis...", see? "TENNIS players are turning to Adidas. They know that, whatever their game, they can rely on Adidas workmanship and quality in every product we make."
W: OK, OK, dear. I know Adidas is good. But how much is a pair of your size?
M: You don’t have to worry about that, Mum. I’ve saved some money since last Christmas. I just want to hear your opinion.
W: That’s good. I have been wanting to have a pair of Adidas sneakers myself.
Questions 19 to 22 are based on the conversation you have just heard.
19. What is the boy doing?
20. What does his mother think about Adidas shoes?
21. Why does his mother object to the boy’s idea of buying Adidas?
22. What is not true about the boy?