Write the correct forms of the adjectives

1. I think the shark is
   [ ]
   animal in the world.
2. French is
   [ ]
   language for my sister.
3. [ ]
   thing you can do in the summer is watching TV all day long.
4. My house is
   [ ]
   place in the world.
5. Is Russia
   [ ]
   country?
6. Markus was
   [ ]
   student in our group.