. If only I ________ how to operate an electronic computer as you do.
#89384
A
had known
B
would know
C
should know
D
knew
推荐题目
My careless friend Bob received a ticket for speeding. He ____ have driven so fast.
#87755
A
can’t
B
wouldn’t
C
mustn’t
D
shouldn’t
—Mary broke up with me!—You _____ have forgotten about the Valentine's Day．
#86967
A
shouldn't
B
couldn't
C
needn't
D
mustn't
--I once got lost during my first visit to Beijing. -- Oh, did you? You ____ me as your guide.
#88052
A
might have asked
B
could ask
C
would have asked
D
would ask
Mr. Brown, a good friend of mine, __________ us but that he was short of money at the time.
#89710
A
would help
B
would have helped
C
had helped
D
helped
—It was a red light, William. You ____ the car. —Sorry. I didn’t see it.
#87773
A
must stop
B
should stop
C
must have stopped
D
should have stopped