Write the comparative forms of the adjectives.
Adjective Comparative Adjective Comparative
1. tall ......................... 2. happy .........................
3. cheap ......................... 4. short .........................
5. expensive ......................... 6. famous .........................
7. good ......................... 8. comfortable .........................
9. lazy ......................... 10. ugly .........................
11. pretty ......................... 12. warm .........................
13. beautiful ......................... 14. long .........................
15. difficult ......................... 16. intelligent .........................
17. boring ......................... 18. wide .........................
19. shy ......................... 20. thick .........................