Had I known about this computer program, a huge amount of time and energy .
#87058
A
would have been saved
B
had been saved
C
will be saved
D
was saved
推荐题目
—Did you meet with the famous space hero , Yang Liwei ?—______ I had come here earlier !
#89510
A
If only
B
If not
C
But for
D
For fear
The teacher demanded all the exercise books ______ the next day.
#86885
A
to be handed in
B
would be handed in
C
be handed in
D
to hand in
----Mary broke up with me!----You ______ have forgotten about the Valentine's Day．
#86982
A
shouldn't
B
couldn't
C
needn't
D
mustn't