______ happened to be no one in that house when the typhoon hit the area.
At the conference, Premier Li Keqiang urged all the government departments ______ effective measures to improve work efficiency.
_______to sunlight for too much time will do harm to one’s skin.
We tried to find a table for seven, but they were all _________.
Without the ____ of my friends, how could my company have lived through the hard times.
By the time he got up, I ______ for two hours in the factory.