If I ____ where he lived , I ____ a note to him
knew , would B
had known , would have sent C
know, would send D
knew, would have sent 2
If they ____ earlier than expected , they ____ here now
had started, would be B
started, might be C
had started, would have been D
will start , might have been 3
I didn't know his telephone number
____ it , I ____ then
Had I known , would ring him up B
Should I know , would have rung him up C
If I knew ; would ring him up D
Had I known ; would have rung him up 4
Mary is ill today
If she _____ , she ____ absent from school
were not ill , wouldn't be B
had been ill , wouldn't have been C
had been ill, should have been D
hadn't been ill , could be 5
Were I to do it , I ________ it some other way