Ответ:

  1. Can you give me some advice about the best smartphones to buy at the moment?
  2. That’s a good idea. I really think it will work.
  3. Why don’t you talk to your teacher about your problems?
  4. Where should I go to buy some new trainers?
  5. You really should try to fix your computer yourself.
  6. What do you think I should wear to the party?
  7. That’s a terrible idea! I can’t lie to my friends!
  8. That’s not a bad idea.