单句语法填空 ( 本 题共 5 小题 ) 在横线处填入适当的关系词
1 . The gentleman _ you met yesterday proved to be a thief
2 . In this article, we will talk about a particular type of comfort food _ power mainly lies in the association it calls to mind
3 . I’m deeply impressed by the professors and labs _ I visited in Nanjing University.