【题目】The police spent all day looking for the three children and they were finally found _____ in an old mine outside the village.
A. to play B. playing
C. play D. played
在线课程【答案】B
【解析】
考查非谓语动词。句意：警方一整天都在寻找三个孩子，最终在村子外的一个废旧的矿场找到他们正在那里玩耍。根据语境，警方找到孩子的时候，他们正在玩耍，另外本句为find sb doing sth 的被动语态，因而选B。