can mining of asteroids be effective in extracting gold and platinum? Why/Why not?

Holiday Hooray Hooray it's time to tell me about may day during the holidays. Morning I get up early, dress up braided wash and go for a walk. We with friends go to the Park. And shopping with my mom I'm going. In the evening I go home late and go to sleep so tomorrow I immediately urom with the forces to go for a walk.Перевод:
Каникулы ура ура вот и пришло время мне рассказать о маём дне во время каникул. Утро я встаю пораньше заплетаюсь одеваюсь умываюсь и иду гулять. Мы с друзьями ходим в парк. И по магазинам с мамой я иду. Вечером домой я поздно захожу и спать ложусь я сразу чтоб завтра уром с силами идти гулять. 

Dear Ben,
Thank you for your letter. It is so great to hear from you again. Sorry I haven't written for so long.In your letter you ask for advice. In my opinion you should try to take exams next year again. You should not give up, you should fight for your better future.

I also have a dream. I would like to become a journalist, because this job is very interesting and exciting. To my mind journalism is very important today.  Journalists help people to learn news, give them advice and other interesting information.This profession has a lot of advantages.  One of them is travelling. Journalists travel a lot. They can see the world, learn how other people in different countries or cities live, learn their values, traditions, etc.

Well, I'd better go now to do my homework. By the way, where and with whom are you going to go hiking?  Hope to hear from you soon.  Keep in touch.
Best wishes, 
Marina