11. The pilot, whether ______ or design, made the plane do a sharp turn.
. — You could have turned to the soldiers for help. — Yes, but we ____ to manage it on our own. Who would think we would fail?
. I first met Mr Zhao nine years ago. He ____ at a chemical college at that time.
. I’m sorry to have known my train arrives in New York at eight o’clock tonight. The plane I would like to take from there ____ by then.
. She ought to stop work; she has a headache because she ____ all day long.
. By the time I saw the angry expression on his face, I ____ what I was having to face.