31. ---My teeth ached badly last night.
---You’d better go to see ___ dentist and get ________ X-ray.
A. a;a B. an;a C. a; an D. an; an
32. I have to compete __ my classmates at school because my parents always compare me __ other children.
A. to;to B. with;with C. on;with D. with;on
33. I don’t like to practice playing the piano, _______ on the weekend.
A. especially B. nearly C. simply D. mostly