The professor uses （）words and expressions in his lectures. 

The professor uses （）words and expressions in his lectures. 


A、

every day


B、

every day's


C、

everyday


D、

everday’s


【正确答案】：C
【题目解析】：

句意：教授在讲课中使用日常用语和表达方式。“日常的”用法为everyday。