The naughty boy stopped ____ when the teacher went away. Wap版

试题详情及答案解析: The naughty boy stopped ____ when the teacher went away.
A. play B. to play C. playing; 答案：C; 试题分析：句意:当老师离开后那个淘气的男孩停止了玩耍。Stop doing停下正在做的事（已经做了）；stop to do停止去做某事（还没有做）。根据题意，stop使用一般过去时表示已经发生过了，故选C。
考点：考查非谓语动词。