Choose the best anwser

9. This film is ..........................interesting than that film.
A. most B. less C. as D. so
10. My salary is ..........................his salary.
A. high B. more high C. higher than D. more higher than
11. He works ..........................we do.
A. harder B. as hard as C. more harder D. so hard as
12. No one in this class is ..........................Jimmy.
A. so tall as B. tall than C. the tallest D. more tall than