----I’m sorry, but there is no smoking on this flight.----Oh, I _____ that. Sorry, I won’t again.
#104849
A
don’t know
B
didn’t know
C
won’t know
D
haven’t known
推荐题目
When winter comes, it _________ become very cold in Shenyang.
#101491
A
is going to
B
will
C
has
D
is about to
 Since last year I____ him only once.
#103740
A
have seen
B
have been seeing
C
see
D
was seeing
This is John’s photo. We miss him very much. He _______ trying to save a girl in the earthquake.
#99312
A
is killed
B
was killed
C
has been killed
D
had been killed