Convert cover failed,Please try again!

Convert cover failed,Please try again! Convert cover failed,Please try again! Convert cover failed,Please try again! cover cover cover cover cover cover cover They failed to ____ the directors that their proposals would work. A.convince B.confirmC.convert D.control 为什么不选C?请分析选项 convert...into...啥意思? convert folder to cover to cover Convert.ToString(DataReader.GetInt32(2)) cover for cover a COVER怎么样