Tell the children there not to make so much noiseA. playB. playedC. playingD. to play

问题补充：

Tell the children there not to make so much noise．

A. play

B. played

C. playing

D. to play

答案：

A. play

B. played

(答案→)C. playing

D. to play

解析：本题的含义是告诉在这儿正在玩得孩子们不要制造吵闹声，修饰名词children表示正在做的事，可用现在分词doing来表示，故本题选C。