The gentleman _ you met yesterday proved to be a thief 2.题目不完整3 . I'm deeply impressed by the professors and labs _ I visited in Nanjing University 4 . Why can't you realize the part _ they have played in our life ?5 . The first thing _ should be done is to work out a plan.

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.题目不完整

3 . I'm deeply impressed by the professors and labs _ I visited in Nanjing University 

4 . Why can't you realize the part _ they have played in our life ?

5 . The first thing _ should be done is to work out a plan.