选词填空

选词填空
she was very angry and she strat --------（crying/to cry）
Lucy stopped--------(talking/to talk)to Mr Sun when she saw him.
第一个是crying,第二个是to talk,答案是这样写的但是我不明白,strat dong sth 不是“开始继续做某事（已做）”吗,按照题的情景,she应该还没开始哭泣,所以不是 to do 还有下一题,Lucy应该是正在说话然后停下来,不是用stop ding 也许是我理解有误,
stop doing，倒数第二行打错了