Question

【题目】The police________ trying to_______ who the murderer is．

A. is，find B. are，find out C. is，work out D. are，look for

Answer 1

【答案】B

【解析】句意：警察正在努力查明杀人犯是谁？the police“警察”，是集体名词，作主语时，谓语用复数，故排除AC两项。find找到；find out找出，查明；work out解决，算出；look for寻找。根据宾语从句who the murderer is可知此处表示要查明杀人犯是谁，故选B。