He said______ his sister had passed the entrance examination of college, and______she would go to college in about 20 days.
The farmers built long fences, __________ keeping the wild dogs out of them.
Once __________, the play was well received by the public.
__________ more time, they will do a better job.
__________ with such a difficult problem, he decided to ask for some good advice from his colleagues.
The leader came into the room, __________ by his two assistants.