If I ______ about this computer program, a hage amount of time and energy would have been saved.
#87162
A
know
B
knew
C
had known
D
have known
推荐题目
If penicillin _____________ available, many people ______________ from sickness.
#86943
A
weren’t , would have died
B
shouldn’t be, would die
C
hadn’t been, would have died
D
is, will die
The officer insisted the young girl______a thief and ordered she______free.
#87505
A
was not；be set
B
should not be；be set
C
was not；was to be set
D
was not；set
Mark have hurried. After driving at top speed, he arrived half an hour early.
#86678
A
needn’t
B
wouldn’t
C
mustn’t
D
couidn’t
— Is John coming over this weekend?— He should, but he _______ not. He seems to be busy these days.
#87075
A
can
B
may
C
must
D
will
Maybe if I _______ literature, but not science then, I would be able to give you more advice now.
#87360
A
studied
B
would study
C
had studied
D
was studying