---Have you seen Mary lately?---Yes. ______ that I met her in the street the other day.A.I happenedB.It happenedC.It happensD.I happens
网友回答
B解析happen作“碰巧”讲是不及物动词，通常用sb. happens to do sth.或It(so)happens+that从句。该题属于后一种句型，根据空白后that引导的从句所用的过去时态可以判断出，此空的主句也应用一般过去时态。