Question

【题目】________ Chai Jing said in her video about the smog has caused public concern.

A．That B．Which C．How D．What

Answer 1

【答案】D

【解析】Smog,n.,烟雾。Concern,n.,担忧。根据从句柴静说的事情（“what Chai Jing said”）是该句主语，从句为主语从句。关系代词作从句的宾语，因此用what。Which作关系代词表示从确定的选择对象中选择一个，不符合。