--- I’m sorry, but there is no smoking on this flight． --- Oh, I _________ that．Sorry, I won’t again．
#103054
A
don’t know
B
didn’t know
C
won’t know
D
haven’t known
推荐题目
In general, most tennis ________ on hard courts or on clay.
#99493
A
plays
B
is played
C
has played
D
has been played
After the examination，my teacher told me that failure _______the mother of success.
#102951
A
was
B
is
C
be
D
been
— Is Tom still smoking? — No. By next Saturday he ＿＿ for a whole month without smoking a single cigarette.
#104405
A
will go
B
will have gone
C
will have been
D
has been going
The vegetables didn’t taste very good. They＿＿too long.
#104409
A
had been cooked
B
were cooked
C
had cooked
D
cooked
All flights ____ because of the snowstorm, many passengers could do nothing but take the train.
#100988
A
had been canceled
B
have been canceled
C
having been canceled
D
being canceled