May I smoke here?— If you ______, choose a seat in the smoking section.[ ]

It is by no means clear the president can do to end the strike.

I have been living in the United States for 20 years, but seldom ________ so lonely as now.

People now can know what is happening in the worldquickly.—You’re right.With the help of computers，news can ___every corner of the world.

The state-run company is required to make its accounts as_________ as possible for its staff to monitor the use of money.