Question

【题目】The policeman has caught the thief____ stole Mr. Li's wallet.

A. whose B. who C. whom D. which

Answer 1

【答案】B

【解析】句意：警察已经抓住了那个偷了李先生钱包的贼。作为定语从句的引导词，whose指人或物，只能作定语；who 指人，用作主语； whom指人，只能作宾语；which只能指物。修饰先行词the thief的定语从句中，缺少主语，the thief指人，故用关系代词who。故选B。