Question

The policeman caught the thief ______ has stolen Mr. Li’s computer.

A．which

B．whose

C．whom

D．who

Answer 1

D

考查定语从句的引导词，which 用于指事儿；whose“谁的”； whom“谁”是宾格； who“谁”，是主格，先行词指人，关系代词在从句中作主语，所以要用主作格。