I happened________Mary in the street the other day．
A.meet
B.meeting
C.to meet
D.met
网友回答
C解析分析：happen to do sth意思是“碰巧做某事”，所以选C项。(延伸)happen另外一个意思是“发生”，后面所接的to是介词，如：What happened to him yesterday？He fell off the bike．(延伸)碰巧发生的事也可以用It(so)happened that从句，所以原句＝It so happened that I met Mary in the street the other day．