Comparative or Superlative?

Fill in the gaps with the Comparative or Superlative of the adjectives in brackets.

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. Note that you will lose points if you ask for hints!
1. John's brother is Susan. (OLD)
2. This is snake in the world. (POISONOUS)
3. Mark is as his sister. (INTELLIGENT)
4. German shepherds are much poodles. (BIG)
5. I think Steven is boy in our class. (TALL)
6. She is girl I know. (PRETTY)
7. My father's bedroom is room in the house. (COLD)
8. My bedroom is the kitchen. (QUIET)
9. Mountain climbing is tennis. (DANGEROUS)
10. My computer is Peter's. (GOOD)