A. Circle the correct form. One is extra! (5×1=5 pts.)
1. Big cities are more crowded/crowdeder than small towns.
2. This skirt is expensiver/more expensive than the pink one.
3. Bears are dangerouser/more dangerous than polar bears.
4. Cheetahs are faster/more fast than the other wild cats.
5. Animals feel more happy/happier living in their natural habitat.
6. The cinema is further/farther than the theatre.(BE CAREFUL!)