从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21.Their products enjoy 30 percent of the market in this country because both the quality and their service are fine..
A．feature B．share C．discount D. sales
22.He proved himself a true gentleman and the beauty of his was seen at its best when he worked with others..
A．advantage B．appearance C．qualification D. character
