.---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
—Do you know anyone in Paris?  —No. I'll make friends once______. 
#104324
A
I'msettled
B
Ihavesettled
C
I'llbesettled
D
I'msettling
Jack doesn’t smoke now, but he ______ for almost twenty years.
#101774
A
smoked
B
was smoking
C
has smoked
D
had smoked
The three of us ________ around Europe for about a month last summer.
#101831
A
travelled
B
have travelled
C
had travelled
D
travel
 --- What is that wonderful smell? --- Our neighbor ________ for a party.
#103154
A
have prepared
B
are preparing
C
prepare
D
will prepare