—Do you know where the headmaster is? I have something urgent. —Oh, he ____ have gone far, for the computer is still on in the office.
I am not ______ up late.
If we don't start now, we must risk ____ the train.
If I ______ten years younger, I _____ very happy.
I must go there earlier. John has suggested that I _____an hour before the discussion begins.
The professor gave orders that the test ____before 5:30.