I’m sorry you’ve been waiting so long, but it’ll still be some time ___ Brian gets back.
—Whoever drives after drinking should be seriously punished. —__________ And thus people feel safer and more accidents can be avoided.
—Were you worried about your daughter last night? —Yes. It was __________.
Mr. Li is __________ chairman of the meeting.
This school was the first __________ textbooks as well as reading materials.
You can never be __________ when crossing the street.