Question

mr.smith ____is smoking is looking for something

Mr．Smith ______ is smoking is looking for ______ he lost yesterday．（　　）

A. whom，which

B. who，what

C. that，who

D. which，where

Answer 1

答案：B；
第一个设空处，首先分析句子结构，句中的"______ is smoking"在复合句中作定语从句，由于先行词 Mr．Smith 为下文定语从句的逻辑主语，且指人，所以引导定语从句的关系代词用that或者who；第二个设空处表达的意思是"他所丢失的东西"，应该用what作lost的宾语，故选B．