Not until he left his home ______ to know how important the family was for him.
It won’t be quite a long time ________ your son is back, so don’t be worried.
—What's the matter with the man hanging his head there?—Well,if you ________ know, he was caught stealing my bike.
GM, Chrysler and Ford expressed their desire that they ________ in want of a $25 billion government aid to pull through the financial crisis.
The gasoline _______. Let’s fill the car up at the next gas station.
Little _______ about her own safety, though she was in great danger herself.