. I _____ her not to walk on the thin ice but she would not listen to me.
The government has taken some measures to solve the shortages of electricity, but it may be some time _______ the situation improves.
Li Ping is the only one of the students whom I think _______ fit for the job.
________ five minutes ______ before the last bus left, we arrived at the station.
I am moving to the countryside because the air there is much fresher than _______ in the city.
The farmers once used wood to build a house ______ to store grains all the year round.