about this computer program, a huge amount of time and energy .
#79940
A
Should I know; be saved
B
If I had known; can be saved
C
Had I known; would have been saved
D
Did I know; was saved
推荐题目
For a moment nothing happened, then all shouting together.
#82743
A
voices had come
B
did voices come
C
voices would come
D
came voices
I’ve tried very hard to improve my English. But by no means _____ with my progress.
#81052
A
the teacher is not satisfied
B
is the teacher not satisfied
C
the teacher is satisfied
D
is the teacher satisfied
What do you think of the suggestion ________ we organize a football club?
#79687
A
which
B
whether
C
that
D
what
Some scientists believe that it won’t be long _______ robots are widely used in all walks of life．
#82112
A
since
B
after
C
before
D
until
_____who had arrested him three times for drug-taking.
#81284
A
Before George did the policeman stand
B
Before George the policeman stood
C
Before the policeman stood George
D
Before George stood the policeman