单选题 The police are searching for a boy who is reported to ______ since the flood hit the area last Friday.
【正确答案】 B
【答案解析】[考点] 现在完成进行时 [解析] 小孩失踪这件事是一直持续到现在的，所以用现在完成进行时have/has been+现在分词。