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
推荐题目
When a pencil is partly in a glass of water, it looks as if it _______. 
#104039
A
breaks
B
has broken
C
were broken
D
had been broken
.If you ___ it, I will lend the novel to you.
#103434
A
has read
B
will read
C
read
D
would read