Sam_____some knowledge of the computer just by watching others working on it.A,brought up B,looked C,picked up D.set up
—The light in the office is still on. —Oh,I forgot ________.
You have no idea how she finished the relay race _________ her foot wounded so much.
A great man shows his greatness _________ the way he treats little men.
If you really have to leave during the meeting, you’d better leave _________ the back door.
Fred entered without knocking and, very out of breath, sank _________ a chair.