Don’t use words ,expressions or phrases __________ only to people with specific knowledge.
#95791
A
being known
B
to be known
C
known
D
having been known
推荐题目
_____ many times, he finally understood it. 
#94484
A
Told
B
Telling
C
Having told
D
Having been told
The salesman scolded the girl caught_______and let her off.
#97859
A
to have stolen
B
to be stealing 
C
to steal
D
stealing
The office ordered his soldiers ________.
#93951
A
stand still
B
do not stand still
C
to not stand still
D
not to stand still