______ he was at home, I would have phoned him then.
#86596
A
Had I known
B
I had known
C
Would I know
D
I would know
推荐题目
 Michael ______ be a policeman, for he is much too short.
#89354
A
needn’t
B
can’t
C
should
D
may
Had I known about this computer program, a huge amount of time and energy________.
#87046
A
would have been saved  
B
had been saved
C
will be saved
D
was saved
---My little daughter is coughing worse than ever. ---She ______ to the hospital yesterday.
#86468
A
had to be taken
B
should have taken
C
must have been taken
D
ought to have been taken