The big fire in Shanghai, believed to ______ due to the burning of construction materials, caused 58 deaths and destroyed all the belongings of the people there.
Never in my life ____ such a thing.
____ today, he would get there by Sunday.
—— Your father is very strict with you. ____. He never lets off a single mistake of ours.
No sooner ____ to the station ____ the train left.
If you don't go, neither ____.