______ when to leave, I could only stay at home, _____ nothing. 
#93935
A
Knowing not; done
B
Not having known; doing
C
Having not known; done
D
Not knowing; doing
推荐题目
All flights___ because of the snowstorm, we decided to take the train. 
#94777
A
were canceled 
B
had been canceled
C
having canceled
D
having been canceled
-The teacher told them ________ make so much noise. 
#98785
A
don’t
B
not
C
will not
D
not to