单选题 A police officer was sent to______ the crime.
【正确答案】 B
【答案解析】解析:investigate vt.调查,调查研究。search(for)vt.搜,寻,探查。survey vt.调查,全面审视;俯瞰:测量。explore vt.探索,探究;探险,勘探。