.---I’m sorry, but there’s no smoking room in this section on the train.  ---Oh, I _____ that, and I won’t smoke again.  
#103681
A
don’t know
B
won’t know
C
didn’t know   
D
haven’t known
推荐题目
Catherine came home happily, which suggested that she        the final exam.
#102510
A
had passed
B
pass
C
would pass
D
should pass
They are living with their parents for the moment because their own house __________.
#101270
A
has been rebuilt
B
is being rebuilt
C
is rebuilt
D
has rebuilt
Today’s temperature_______ between ten and thirty degrees.
#102750
A
change
B
ranges
C
is changed
D
is ranged
Since Jack was laid off from his job three months ago, he       a new one, but without luck.
#100379
A
looked for
B
bad looked for
C
is looking for
D
has been loking for