1. Karen is ______ than her sister.
   a) young
   b) younger
   c) youngest

2. The mouse is the ______ animal in the zoo.
   a) small
   b) smaller
   c) smallest

3. Barbara is as ______ as Janet.
   a) intelligent
   b) more intelligent
   c) most intelligent

4. The dog is ______ than the hamster.
   a) large
   b) larger
   c) largest

5. Everyone in our family sings beautifully, but my mother is the ______ singer.
   a) good
   b) better
   c) best

6. A knife is ______ than a spoon.
   a) dangerous
   b) more dangerous
   c) most dangerous