(   )1. It’s       hard work building a bridge over the river. 
       A. a                               B. the                    C. one                   D. /
(   )2. The young man is one of the best       in the restaurant. 
       A. cook                          B. cooks         C. cooker              D. cookers
(   )3.    — Who teaches       physics this term?
             — Miss Yang. 
A. you                         B. your        C. yours            D. yourself