When his mother came in he stopped .A cry B. criedC to cry D. crying

问题补充：

When his mother came in , he stopped .

A cry B. criedC to cry D. crying

答案：

解析： 句意，当他的妈妈进来时，他停止了哭。Stop dong sth.停止做某事；stop to do sth.停下来去做某事。