The weather ________ be very cold at times, though it’s usually warm in spring in my home-town.
—What have you done with my cat?—I'm terribly sorry.I've ________ it.Believe me, it's an accident.But I'd like to pay for it.
Most nurses are women, but in the higher ranks of the medical profession women are in a ________.
The interviewee hurried to the meeting room,only ________ that the interview was over.
Please call my secretary to arrange a meeting this afternoon, or ________ it is convenient to you.(2011·江西)
—How is your recent trip to Sichuan?—I've never had ________one before.(2011·四川)