He wondered if he could slip out of the lecture hall without anyone _____.
#91045
A
noticing
B
noticed
C
to notice
D
being noticed
推荐题目
 ______ in prison for ten years, no one recognized him.
#91615
A
The man’s having put
B
The man being put
C
The man having been  
D
Having been
With efforts _______ conservation, we may believe that people enjoy a healthy life without the environment around them ________. 
#91305
A
focused on; suffering
B
focusing on; suffering
C
focused on; being suffered
D
focusing on; suffered