What shall we use for power when all the oil in the world has _________?
—Have you heard of the North Korea’s nuclear test?—Yes,________news came as________shock to me.
At least 203 miners were killed,22________and 13________in a coal mine gas explosion in Fuxin.
________of the land in that area________covered with trees and grass.
It was on a cold winter evening_______ his father left home and was never back.
Is this school ________ my father studied in when he was a child.