Choose the correct options

1. He is [the young|the youngest|younger]
   participant in that game show.
2. We have lived here [for|since|yet]
   last summer.
3. You must be [careful|careless|care]
   with your career choice.
4. She has never [be|was|been]
   to London.
5. Mark runs [fastest|faster|the faster]
   than John.
6. [Did you visit|Have you visited|Do you visit]
   your parents the other day?
7. I am very tired, I want to turn [off|in|out].
8. Sandra is [not as creative as|so creative as|creative than]
   Miranda.
9. I [haven't spoken|spoke|didn't speak]
   to my boss yet.
10. Could you talk [more quietly|quieter|most quietly],
    please?