—Whydidyoupromotehimtoapositionofleadership?  —

问题详情：

—Why did you promote him to a position of leadership?

   — ________ his qualifications and ideas.

   A. On behalf of        B. Regardless of   C. On the basis of  D. In relation to 

【回答】

C

知识点：介词

题型：选择题