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You can only be sure of ________ you have at present; you cannot be sure of something ________ you might get in the future.

  Could I speak to ________ is in charge of International Sales，please?

  The traditional view is ________ we sleep because our brain is “programmed” to make us do so.

  I'd like to start my own business–that's  ________ I'd do if I had the money.(2011·陜西)

  It was never clear ________ the man hadn't reported the accident sooner.(2011·江蘇)

________ Barbara Jones offers to her fans is honesty and happiness.(2011·北京)

  Just use this room for the time being, and we'll offer you a larger one ________ it becomes available.(2010·安徽)

  Because of the heavy traffic，it was already time for lunch break ________ she got to her office.(2010·四川)

—The train is due to leave at 7：50.
—________ we fail to arrive there in time?
—I'm afraid you'd better go in a hurry.

________ nobody wouldn't go to the spot，he went without a second thought.