Fill in the gaps with the comparative form of the adjectives given. 1.  A rock is   than a leaf. (heavy)2. Our house is  than yours. (big)3. The princess is  than the witch. (beautiful)4. Tom is a  student than Mary. (good)5. Bicycles are  than motorbikes. (safe)6. July is  than January. (hot)7. A lion is  than a cat. (dangerous)8. Helen is  than Mary. (happy) 9. Computers are  than telephones. (expensive)10. I think golf is  than football. (boring)surpe urgente