. 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
This vase ________ perfect but for a few small holes in its base.
#86632
A
would have been
B
should have been
C
shall be
D
would be
We ________ our lives had it not been for the policeman.
#89376
A
would have lost
B
should lose
C
might lose
D
had lost
Jack _______ yet last night, otherwise he _______ me.
#89893
A
mustn’t have arrived; must have phoned
B
can’t have arrived; would have phoned
C
may have arrived; need have phoned
D
shouldn’t have arrived; can have phoned
----I thought you wouldn’t mind.----Well, as a matter of fact I don’t, but you _____ me first.
#89312
A
should ask
B
should have asked
C
must ask
D
must have asked