When I entered the classroom, I found the students（）the questions in groups.

单项选择题Our new sales manager found out that（）the job done is not as easy as it first appears.

A. get
B. got
C. gotten
D. getting

单项选择题Only later（）his notebooks, which contained details of all his thefts.

A. they came across
B. did they come across
C. they had come across
D. had they come across