The missing boy was last seen ________ near the church．

The missing boy was last seen ________ near the church．

A.playing

B.to be playing

C.play

D.to play

答案及解析： A

本题考查非谓语动词的用法．由句意可知，这是一个被动语态，表示被看见正在做某事，因此应该用现在分词playing，其他选项不符合题意．