But for your timely warning, we ___have been unaware of the danger. Thank you very much! 
#86790
A
shall
B
must
C
will
D
would
推荐题目
He______the job well, but he______so careless.
#90541
A
had done; had been
B
could do; was
C
could have done; was
D
hadn’t done; had been
He said he didn’t regret telling the truth but felt that he ______ it differently. 
#87843
A
could have expressed
B
could express
C
must have expressed
D
would express
Smoking pollutes air. You ______ smoke here.
#87295
A
won’t
B
can’t
C
ought not to
D
needn’t