What is Tina’s attitude towards the advertisement?

M: Tina, have you ever noticed advertisements?
W: What’s that?
M: Some advertisements say "Learn a foreign language in 6 weeks, or get your money back!"
W: It never happens quite like that. The only language easy to learn is the mother tongue. And think how much practice that gets!
M: It is really hard to master a language. Some people try at home, with books and records or tapes; some use radio or television programs; others go to evening classes.
W: A few people try to learn a language fast by studying for 6 or more hours a day. Do you think it’s a very effective way to learn a foreign language?
M: I don’t think so. It’s clearly to learn the language in the country where it’s spoken. There you come into contact with it all the time.
W: I can’t agree with you any more, but not everyone can afford this, and for many it’s not necessary.
M: However, foreign language, especially English, is an indispensable part of our life. People need the language to do their work better.
W: You bet it. It’s impossible for everyone to go abroad. And we can achieve great success as long as excellent ways are adopted.
M: Besides, perseverance is very important. We should accumulate what we learn gradually and put them into practice.
W: Undoubtedly, it’s a hard work. Machines and good books will give us some help, but they cannot replace the learner himself.