Not until the game had begun __ at the sports ground.

• A、should he have arrived 

• B、would he have arrived

• C、did he arrive

• D、had he arrived

你是王剛(Wang Gang)，寫一封給朋友李明(Li Ming)的祝賀信，祝賀他獲得復旦大學計算機科學碩士學位，并祝他今后在學習和研究方面取得成功。

23（）

• A、miss 

• B、reduce

• C、increase 

• D、lose