The police spotted a thief things in a mall at this time yesterday.
A. stealing
B. steal
C. robbed
D. picking
网友回答
(答案→)A. stealing
B. steal
C. robbed
D. picking
解析：考查现在分词做宾语补足语：spot sb. doing sth. 看到某人正在做某事，句意：昨天这个时候，警察看见一个小偷正在店里偷东西。Rob是抢劫，宾语是人，pick是扒窃，宾语是pocket，选A。