自有营业厅在渠道体系中发挥样板示范作用，促进社会渠道规范化、标准化，提升整体渠道的服务水平，提高渠道的市场竞争力。

—I feel very happy that I ________ to be the host.        

—Congratulations !          [ ]

A. choose                            

B. am chosen          

C. was chosen                        

D. have chosen