Question

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 

Answer 1

1, heavier 2. bigger 3. more beautifil 4.            5. safer 6. hotter 7. more dangerous 8. happier 9. more expensive 10. more boring (la numero 4 no se si es more good si) espero que te halla ayudado!